*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --bg-offset:0px;
    --bg: #07070b;
    --bg-secondary: #0c0c12;
    --bg-card: rgba(20,20,28,.72);
    --bg-card-hover: rgba(30,30,40,.9);

    --text-primary:#F8F9FB;
    --text-secondary:#B7BCC8;
    --text-muted:#7A8090;

    --border:rgba(255,255,255,.08);
    --border-hover:rgba(255,255,255,.16);

    --grad-1:#6C63FF;
    --grad-2:#FF5FA2;
    --grad-3:#00D9B8;
    --grad-4:#FFD166;

    --shadow-lg:
    0 30px 80px rgba(0,0,0,.45);

    --glass:
    rgba(255,255,255,.04);

    --glass-border:
    rgba(255,255,255,.08);

    --radius:24px;

    --maxw:1280px;

    --nav-h:80px;

}

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 16px); }

body{

    font-family:'Inter',sans-serif;

    background:
    radial-gradient(
    circle at 18% 15%,
    rgba(108,99,255,.28),
    transparent 35%
    ),

    radial-gradient(
    circle at 82% 78%,
    rgba(0,217,184,.18),
    transparent 38%
    ),

    linear-gradient(
    180deg,
    #090911 0%,
    #080913 35%,
    #07070b 100%
    );

    background-attachment:fixed;

    color:var(--text-primary);

    overflow-x:hidden;

    position:relative;

    line-height:1.7;

}

body::before{
    content:"";
    position:fixed;
    left:-250px;
    top:-200px;
    width:550px;
    height:550px;
    border-radius:50%;
    background:#6C63FF;
    opacity:.10;
    filter:blur(170px);
    pointer-events:none;
    z-index:-2;
    transform:translateY(calc(var(--bg-offset) * .35));
    transition:transform .08s linear;
}

body::after{
    content:"";
    position:fixed;
    right:-250px;
    bottom:-250px;
    width:700px;
    height:700px;
    border-radius:50%;
    background:#00D9B8;
    opacity:.12;
    filter:blur(170px);
    pointer-events:none;
    z-index:-2;
    transform:translateY(calc(var(--bg-offset) * -.25));
    transition:transform .08s linear;
}

.glass{

background:var(--glass);

backdrop-filter:blur(22px);

-webkit-backdrop-filter:blur(22px);

border:1px solid var(--glass-border);

box-shadow:var(--shadow-lg);

border-radius:var(--radius);

}

img { max-width: 100%; }

/* Reusable gradient text */
.gradient-text {
  background: linear-gradient(135deg, var(--grad-1) 0%, var(--grad-2) 50%, var(--grad-4) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.mt-lg { margin-top: 1.75rem; }

/* Accessibility: skip link */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 999;
  padding: 0.75rem 1.25rem;
  background: var(--accent);
  color: #fff;
  border-radius: 0 0 8px 0;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.875rem;
}
.skip-link:focus { left: 0; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* --------------------------------------------------------------------------
   2. NAVIGATION
   -------------------------------------------------------------------------- */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(10, 10, 15, 0.85);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--grad-1), var(--grad-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
  flex-shrink: 0;
}

.nav-links { display: flex; gap: 2rem; list-style: none; }
.nav-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  transition: color 0.2s;
  letter-spacing: 0.02em;
}
.nav-links a:hover { color: var(--text-primary); }

.nav-right { display: flex; align-items: center; gap: 0.75rem; }

/* Language switcher (nav only) */
.lang-switcher { display: flex; gap: 0.4rem; align-items: center; }
.lang-btn {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  border-radius: 100px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.04);
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  letter-spacing: 0.06em;
  transition: opacity 0.2s, border-color 0.2s, background 0.2s, color 0.2s;
  opacity: 0.45;
}
.lang-btn:hover { opacity: 0.75; border-color: var(--border-hover); }
.lang-btn-active,
.lang-btn-active:hover {
  opacity: 1;
  border-color: rgba(108,99,255,0.6);
  background: rgba(108,99,255,0.15);
  color: var(--text-primary);
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 38px;
  height: 38px;
  padding: 0 8px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.2s;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* --------------------------------------------------------------------------
   3. HERO
   -------------------------------------------------------------------------- */
.hero{
  position:relative;
  display:grid;
  grid-template-columns:1.15fr .85fr;
  align-items:center;
  gap:6rem;
  max-width:1280px;
  margin:auto;
  min-height:100vh;
  padding:120px 32px 80px;
  overflow:hidden;
  position:relative;
  background:transparent;
  isolation:isolate;
}

.hero::before{
  content:"";
  position:absolute;
  left:-120px;
  top:120px;
  width:450px;
  height:450px;
  border-radius:50%;
  opacity:.18;
  filter:blur(70px);
  pointer-events:none;
  animation:floatGlow 9s ease-in-out infinite;
}

.hero::after{
  content:"";
  position:absolute;
  right:-180px;
  bottom:-100px;
  width:520px;
  height:520px;
  border-radius:50%;
  opacity:.10;
  filter:blur(80px);
  pointer-events:none;
  animation:floatGlow2 12s ease-in-out infinite;
}

.hero-text{
  position:relative;
  z-index:2;
  display:flex;
  flex-direction:column;
  justify-content:center;
}

.hero-badge {
  display: inline-block;
  padding: 0.35rem 0.9rem;
  border-radius: 100px;
  border: 1px solid rgba(108, 99, 255, 0.4);
  color: #9B94FF;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  margin-bottom: 1.5rem;
}

.hero-name{
  font-family:"Space Grotesk",sans-serif;
  font-size:clamp(4rem,9vw,7rem);
  font-weight:700;
  line-height:.95;
  letter-spacing:-4px;
  margin-bottom:18px;
  max-width:700px;
}

.hero-tagline {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}
.hero-tagline .highlight { color: var(--accent-3); font-weight: 500; }

.hero-uni {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.hero-desc{
  max-width:620px;
  font-size:1.08rem;
  color:var(--text-secondary);
  line-height:1.9;
  margin:36px 0;
}

.hero-cta{
display:flex;
gap:18px;
margin-top:10px;
flex-wrap:wrap;
}

.btn-primary{
  padding:16px 32px;
  border:none;
  border-radius:999px;
  background:linear-gradient(135deg,var(--grad-1),var(--grad-2));
  font-weight:700;
  font-size:.95rem;
  cursor:pointer;
  transition:.35s;
  box-shadow:
  0 10px 35px rgba(108,99,255,.35);
}

.btn-primary:hover{
  transform:translateY(-4px);
  box-shadow:
  0 25px 60px rgba(108,99,255,.45);
}

.btn-outline {
  padding: 0.75rem 1.75rem;
  border-radius: 8px;
  border: 1px solid var(--border-hover);
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.9rem;
  text-decoration: none;
  transition: border-color 0.2s, color 0.2s, transform 0.2s;
}
.btn-outline:hover { border-color: var(--accent); color: var(--text-primary); transform: translateY(-1px); }

/* Avatar */
.hero-avatar {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}
.avatar-ring {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  padding: 4px;
  background: linear-gradient(135deg, var(--grad-1), var(--grad-2), var(--grad-3));
}
.avatar-inner {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  overflow: hidden;
  background: linear-gradient(135deg, #1a1a2e, #16213e);
}
.avatar-inner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 20%;
  border-radius: 50%;
  display: block;
}

/* Socials */
.hero-socials{
    display:flex;
    gap:1rem;
    margin-top:2.25rem;
    flex-wrap:wrap;
}
.social-link{
    width:48px;
    height:48px;
    border-radius:14px;
    border:1px solid rgba(255,255,255,.08);
    background:rgba(255,255,255,.03);
    display:flex;
    align-items:center;
    justify-content:center;
    color:#D8DCE5;
    text-decoration:none;
    transition:
        transform .25s ease,
        border-color .25s ease,
        background .25s ease,
        box-shadow .25s ease,
        color .25s ease;
    backdrop-filter:blur(10px);
    -webkit-backdrop-filter:blur(10px);
}

.cv-text{
    font-size:.82rem;
    font-weight:700;
    letter-spacing:1px;
    color:inherit;
    line-height:1;
    transition:.3s ease;
    user-select:none;
}

.social-link svg{
    width:20px;
    height:20px;
    flex-shrink:0;
    transition:.3s ease;
}
.social-link:hover{
    transform:translateY(-4px);
    border-color:rgba(255,255,255,.16);
    background:rgba(255,255,255,.06);
    box-shadow:
      0 18px 40px rgba(0,0,0,.28),
      0 0 25px rgba(255,255,255,.05);
}

.social-link:hover svg,
.social-link:hover .cv-text{

    transform:translateY(-1px) scale(1.08);

}
/* Platform colors */
.social-link.github:hover{
    color:#ffffff;
    border-color:#ffffff55;
}

.social-link.linkedin:hover{
    color:#0A66C2;
    border-color:#0A66C255;
}

.social-link.email:hover{
    color:#EA4335;
    border-color:#EA433555;
}

.social-link.whatsapp:hover{
    color:#25D366;
    border-color:#25D36655;
}

.social-link.cv:hover{
    color:#FFB347;
    border-color:#FFB34755;
}

/* --------------------------------------------------------------------------
   4. SECTION SHELL
   -------------------------------------------------------------------------- */
section{
  max-width:var(--maxw);
  margin:auto;
  padding:120px 32px;
  position:relative;
}

.section-label {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}
.section-label-center { justify-content: center; margin-bottom: 1.5rem; }
.section-label-line {
  height: 2px;
  width: 32px;
  border-radius: 2px;
}
.section-label-text {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--accent);
  text-transform: uppercase;
}

.section-title{
  font-size:clamp(2.5rem,5vw,4rem);
  font-family:"Space Grotesk";
  font-weight:700;
  letter-spacing:-2px;
  line-height:1.05;
  margin-bottom:60px;
}

.section-divider {
  border: none;
  border-top: 1px solid var(--border);
  max-width: var(--maxw);
  margin: 0 auto;
}

/* --------------------------------------------------------------------------
   5. ABOUT
   -------------------------------------------------------------------------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 4rem;
  align-items: start;
}
.about-text p {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 1.25rem;
}
.about-stats { display: flex; flex-direction: column; gap: 1rem; }
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  transition: border-color 0.2s, background 0.2s;
}
.stat-card:hover { border-color: var(--border-hover); background: var(--bg-card-hover); }
.stat-number {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--grad-1), var(--grad-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-number-pink { background: linear-gradient(135deg, #FF6B9D, #FFB347); -webkit-background-clip: text; background-clip: text; }
.stat-number-teal { background: linear-gradient(135deg, #00D4AA, #6C63FF); -webkit-background-clip: text; background-clip: text; }
.stat-label { font-size: 0.85rem; color: var(--text-muted); margin-top: 0.2rem; }

/* --------------------------------------------------------------------------
   6. SKILLS TICKER
   -------------------------------------------------------------------------- */
.ticker-wrap {
  overflow: hidden;
  margin: -1rem 0 3rem;
  mask-image: linear-gradient(90deg, transparent, black 10%, black 90%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, black 10%, black 90%, transparent);
}
.ticker-track {
  display: flex;
  gap: 0.75rem;
  animation: ticker 30s linear infinite;
  width: max-content;
}
@keyframes ticker {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
.ticker-item {
  white-space: nowrap;
  padding: 0.4rem 1rem;
  border-radius: 100px;
  border: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--text-muted);
  background: var(--bg-card);
}

/* --------------------------------------------------------------------------
   7. PROFILE TABS + SKILL TAGS
   -------------------------------------------------------------------------- */
.profile-tabs { margin-top: 0; }
.skill-bars-col { min-width: 0; }
.timeline-col  { min-width: 0; }

.tab-btns {
  display: flex;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}
.tab-btn {
  padding: 0.75rem 1.5rem;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  letter-spacing: 0.03em;
  transition: color 0.2s, border-color 0.2s;
  margin-bottom: -1px;
  white-space: nowrap;
}
.tab-btn:hover { color: var(--text-secondary); }
.tab-btn.tab-active { color: var(--text-primary); border-bottom-color: var(--accent); }

.profile-body {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 3.5rem;
  align-items: start;
}

.skill-bars-title {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}
.skill-group { margin-bottom: 1.5rem; }
.skill-group-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 0.7rem;
  text-transform: uppercase;
}
.skill-tags { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.skill-tag {
  padding: 0.3rem 0.75rem;
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 500;
  border: 1px solid;
  transition: transform 0.15s;
}
.skill-tag:hover { transform: translateY(-1px); }
.skill-tag-purple { background: rgba(108, 99, 255, 0.1);  border-color: rgba(108, 99, 255, 0.3);  color: #9B94FF; }
.skill-tag-pink   { background: rgba(255, 107, 157, 0.1); border-color: rgba(255, 107, 157, 0.3); color: #FF8DB8; }
.skill-tag-teal   { background: rgba(0, 212, 170, 0.1);   border-color: rgba(0, 212, 170, 0.3);   color: #00D4AA; }
.skill-tag-amber  { background: rgba(255, 179, 71, 0.1);  border-color: rgba(255, 179, 71, 0.3);  color: #FFB347; }

/* Spoken languages */
.spoken-langs { display: flex; flex-direction: column; gap: 0.6rem; }
.spoken-lang {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 1rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}
.spoken-lang-flag { font-size: 1.1rem; }
.spoken-lang-level {
  margin-left: auto;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: linear-gradient(135deg, #6C63FF, #FF6B9D);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Soft skills */
.soft-skills-grid { display: flex; flex-direction: column; gap: 0.5rem; }
.soft-skill-tag {
  padding: 0.5rem 0.9rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  font-size: 0.82rem;
  color: var(--text-secondary);
  font-weight: 500;
  transition: border-color 0.2s, color 0.2s;
}
.soft-skill-tag:hover { border-color: rgba(108,99,255,0.4); color: var(--text-primary); }

.tab-content { display: none; }
.tab-content-active { display: block; animation: fadeIn 0.3s ease; }
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* --------------------------------------------------------------------------
   8. TIMELINE
   -------------------------------------------------------------------------- */
.timeline { position: relative; padding-left: 1.75rem; }
.timeline::before {
  content: '';
  position: absolute;
  left: 6px;
  top: 12px;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, #6C63FF, #FF6B9D, #00D4AA, transparent);
  border-radius: 2px;
}
.tl-item { position: relative; margin-bottom: 2rem; }
.tl-item:last-child { margin-bottom: 0; }
.tl-dot {
  position: absolute;
  left: -1.75rem;
  top: 6px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  border: 2.5px solid var(--bg);
  box-shadow: 0 0 10px rgba(108,99,255,0.5);
}
.tl-dot-purple  { background: linear-gradient(135deg,#6C63FF,#FF6B9D); }
.tl-dot-teal    { background: linear-gradient(135deg,#00D4AA,#6C63FF); }
.tl-dot-amber   { background: linear-gradient(135deg,#FFB347,#FF6B9D); }
.tl-dot-lblue   { background: linear-gradient(135deg,#5BC4F5,#3DA8E0); }
.tl-dot-red     { background: linear-gradient(135deg,#FF3B3B,#C0392B); }
.tl-dot-orange  { background: linear-gradient(135deg,#FFB347,#FF8C00); }
.tl-dot-dkblue  { background: linear-gradient(135deg,#1A3A6B,#0D2144); }
.tl-dot-alibaba { background: linear-gradient(135deg,#FF6B00,#FFB347); }
.tl-dot-nvidia  { background: linear-gradient(135deg,#76B900,#4a7a00); }

.tl-date {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
  font-family: 'Space Grotesk', sans-serif;
}
.tl-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.25rem 1.5rem;
  transition: border-color 0.2s, background 0.2s, transform 0.2s;
}
.tl-card:hover { border-color: var(--border-hover); background: var(--bg-card-hover); transform: translateX(3px); }

.tl-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.65rem;
  border-radius: 100px;
  margin-bottom: 0.6rem;
}
.tl-badge-purple  { background: rgba(108,99,255,0.15); color: #9B94FF; }
.tl-badge-teal    { background: rgba(0,212,170,0.15);  color: #00D4AA; }
.tl-badge-amber   { background: rgba(255,179,71,0.15); color: #FFB347; }
.tl-badge-pink    { background: rgba(255,107,157,0.15);color: #FF8DB8; }
.tl-badge-lblue   { background: rgba(91,196,245,0.15); color: #5BC4F5; }
.tl-badge-red     { background: rgba(255,59,59,0.15);  color: #FF6B6B; }
.tl-badge-orange  { background: rgba(255,179,71,0.15); color: #FFB347; }
.tl-badge-dkblue  { background: rgba(26,58,107,0.25);  color: #7BA7E0; }
.tl-badge-alibaba { background: rgba(255,107,0,0.15);  color: #FF8C42; }
.tl-badge-nvidia  { background: rgba(118,185,0,0.15);  color: #76B900; }

.tl-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.2rem;
}
.tl-org  { font-size: 0.8rem; color: var(--accent); font-weight: 500; margin-bottom: 0.6rem; }
.tl-desc { font-size: 0.82rem; color: var(--text-secondary); line-height: 1.7; margin-bottom: 0.85rem; }
.tl-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.tl-tag {
  padding: 0.2rem 0.65rem;
  border-radius: 100px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 500;
}

.tl-list { margin: 10px 0 4px; padding-left: 18px; list-style: none; }
.tl-list li {
  position: relative;
  font-size: 0.85rem;
  line-height: 1.55;
  color: var(--text-secondary);
  margin-bottom: 7px;
  padding-left: 6px;
}
.tl-list li::before {
  content: "\25B8";
  position: absolute;
  left: -14px;
  color: #5BC4F5;
  font-size: 0.85rem;
}
.tl-list li strong { color: var(--text-primary); font-weight: 600; }

/* Certificates */
.cert-preview-wrap {
  margin-top: 1rem;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border);
}
.cert-preview {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.3s ease;
  border-radius: 8px;
}
.cert-preview:hover { transform: scale(1.02); }
.cert-link {
  display: inline-block;
  margin-top: 0.85rem;
  padding: 0.4rem 1rem;
  border-radius: 6px;
  border: 1px solid rgba(118,185,0,0.4);
  color: #76B900;
  font-size: 0.78rem;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.2s;
}
.cert-link:hover { background: rgba(118,185,0,0.1); }

/* --------------------------------------------------------------------------
   9. COURSEWORK
   -------------------------------------------------------------------------- */
.cw-toggle-wrap {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 4px;
  width: fit-content;
}
.cw-toggle {
  padding: 0.5rem 1.25rem;
  border-radius: 7px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
  font-family: 'Inter', sans-serif;
}
.cw-toggle.active {
  background: linear-gradient(135deg, var(--grad-1), var(--grad-2));
  color: #fff;
}
.cw-view { display: block; }
.cw-view-hidden { display: none; }

.sem-grid, .topic-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}
.sem-card, .topic-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.5rem;
  transition: border-color 0.2s, background 0.2s;
}
.sem-card:hover, .topic-card:hover { border-color: var(--border-hover); background: var(--bg-card-hover); }
.sem-card-abroad { border-color: rgba(0,212,170,0.25); }
.sem-card-abroad:hover { border-color: rgba(0,212,170,0.5); }

.sem-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}
.sem-num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--grad-1), var(--grad-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}
.sem-label { font-size: 0.875rem; font-weight: 600; color: var(--text-secondary); }
.abroad-badge {
  font-size: 0.7rem;
  padding: 0.2rem 0.6rem;
  border-radius: 100px;
  background: rgba(0,212,170,0.15);
  color: #00D4AA;
  font-weight: 500;
}

.topic-icon {
  width: 40px; height: 40px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
}
.topic-icon-purple      { background: rgba(108,99,255,0.15);  color: #9B94FF; }
.topic-icon-pink        { background: rgba(255,107,157,0.15); color: #FF8DB8; }
.topic-icon-teal        { background: rgba(0,212,170,0.15);   color: #00D4AA; }
.topic-icon-amber       { background: rgba(255,179,71,0.15);  color: #FFB347; }
.topic-icon-purple-soft { background: rgba(108,99,255,0.1);   color: #9B94FF; }
.topic-icon-pink-soft   { background: rgba(255,107,157,0.1);  color: #FF8DB8; }

.topic-name {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.85rem;
  color: var(--text-primary);
}

.sem-courses, .topic-courses {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}
.sem-courses li, .topic-courses li {
  font-size: 0.82rem;
  color: var(--text-secondary);
  padding-left: 1rem;
  position: relative;
  line-height: 1.4;
}
.sem-courses li::before, .topic-courses li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--text-muted);
  font-size: 0.7rem;
}

/* --------------------------------------------------------------------------
   10. PROJECTS
   -------------------------------------------------------------------------- */
.proj-filter-wrap {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}
.proj-filter {
  padding: 0.45rem 1.1rem;
  border-radius: 100px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}
.proj-filter:hover { border-color: var(--border-hover); color: var(--text-primary); }
.proj-filter.active {
  background: linear-gradient(135deg, var(--grad-1), var(--grad-2));
  border-color: transparent;
  color: #fff;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}
.project-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.75rem;
  transition: border-color 0.25s, background 0.25s, transform 0.25s;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.project-card:hover {
  border-color: rgba(108, 99, 255, 0.4);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}
.project-card.is-hidden { display: none; }

.project-featured { border-color: rgba(0,212,170,0.35); }
.project-featured:hover { border-color: rgba(0,212,170,0.6); }
.project-flag {
  align-self: flex-start;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.2rem 0.65rem;
  border-radius: 100px;
  background: rgba(0,212,170,0.15);
  color: #00D4AA;
  margin-top: -0.5rem;
}

.project-card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}
.project-icon {
  width: 44px; height: 44px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.25rem;
}
.icon-purple { background: rgba(108,99,255,0.15); }
.icon-pink   { background: rgba(255,107,157,0.15); }
.icon-teal   { background: rgba(0,212,170,0.15); }
.icon-amber  { background: rgba(255,179,71,0.15); }

.project-links { display: flex; gap: 0.5rem; }
.project-link {
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s, border-color 0.2s;
}
.project-link:hover { color: var(--accent); border-color: rgba(108, 99, 255, 0.4); }

.project-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.project-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
}
.project-stack { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.stack-tag {
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  background: rgba(255,255,255,0.05);
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   11. CONTACT + FOOTER
   -------------------------------------------------------------------------- */
.contact-wrap { text-align: center; max-width: 600px; margin: 0 auto; }
.contact-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
  line-height: 1.1;
}
.contact-sub {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 2.5rem;
  line-height: 1.7;
}
.contact-links {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.contact-link {
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  border: 1px solid var(--border-hover);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.contact-link:hover { border-color: var(--accent); color: var(--text-primary); background: rgba(108, 99, 255, 0.08); }
.contact-loc { margin-top: 2rem; font-size: 0.85rem; color: var(--text-muted); }

footer {
  border-top: 1px solid var(--border);
  padding: 2rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.8rem;
}
footer span:nth-of-type(2) {
  background: linear-gradient(135deg, var(--grad-1), var(--grad-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   12. RESPONSIVE
   -------------------------------------------------------------------------- */
@media (max-width: 900px) {
  .profile-body { grid-template-columns: 1fr; gap: 2.5rem; }
  .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }
}

@media (max-width: 768px) {
  nav { padding: 0.85rem 1.25rem; }

  .nav-toggle { display: flex; }

  .nav-links {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(10, 10, 15, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 0.5rem 1.25rem 1.25rem;
    transform: translateY(-150%);
    transition: transform 0.3s ease;
    max-height: calc(100vh - var(--nav-h));
    overflow-y: auto;
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links li { border-bottom: 1px solid var(--border); }
  .nav-links li:last-child { border-bottom: none; }
  .nav-links a { display: block; padding: 0.9rem 0; font-size: 0.95rem; }

  section { padding: 4rem 1.25rem; }

  .hero {
    flex-direction: column-reverse;
    gap: 2.5rem;
    padding: 7rem 1.25rem 3rem;
    min-height: auto;
  }
  .hero-avatar { order: -1; }
  .avatar-ring { width: 160px; height: 160px; }
  .hero-desc { margin-bottom: 2rem; }

  .tab-btn { padding: 0.6rem 0.85rem; font-size: 0.78rem; }
  .projects-grid { grid-template-columns: 1fr; }
  .sem-grid, .topic-grid { grid-template-columns: 1fr; }
  .project-card { padding: 1.4rem; }

  .contact-link { width: 100%; justify-content: center; }
  .back-to-top { bottom: 1rem; right: 1rem; }
}

@media (max-width: 420px) {
  .lang-btn span:not(.lang-btn-flag) { display: none; }
  .lang-btn { padding: 0.35rem 0.5rem; }
  .hero-name { font-size: 2.5rem; }
}

/* Motion preferences */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Print */
@media print {
  nav, .back-to-top, .skip-link, .ticker-wrap, .proj-filter-wrap, .cw-toggle-wrap { display: none !important; }
  body { background: #fff; color: #000; }
  .tab-content { display: block !important; }
  a { color: #000; text-decoration: underline; }
}

.noise{
  position:fixed;
  inset:0;
  pointer-events:none;
  opacity:.05;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.45'/%3E%3C/svg%3E");
  z-index:-1;
}

@keyframes floatGlow{

0%{

transform:translateY(0);

}

50%{

transform:translateY(-30px);

}

100%{

transform:translateY(0);

}

}

@keyframes floatGlow2{

0%{

transform:translateY(0);

}

50%{

transform:translateY(40px);

}

100%{

transform:translateY(0);

}

}