/* ===================== CSS VARIABLES ===================== */
@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;500;600;700;800&family=DM+Mono:ital,wght@0,300;0,400;0,500;1,300&family=Outfit:wght@300;400;500;600;700;900&display=swap');

:root {
  --bg:        #050810;
  --bg2:       #080c18;
  --bg3:       #0d1225;
  --card:      rgba(255,255,255,.048);
  --card2:     rgba(255,255,255,.072);
  --card-hover: rgba(255,255,255,.08);
  --text:      #e8eeff;
  --muted:     rgba(200,210,255,.60);
  --border:    rgba(200,210,255,.10);
  --border-h:  rgba(120,100,255,.45);

  --accent:    #7b5ea7;
  --accent-b:  #9d7dff;
  --accent-c:  #31d1ff;
  --accent2:   #00e5a0;
  --rose:      #ff5fa0;

  --glow-a:    rgba(123,94,167,.55);
  --glow-b:    rgba(49,209,255,.30);
  --glow-c:    rgba(0,229,160,.28);

  --shadow:    0 30px 70px rgba(0,0,0,.55);
  --shadow-sm: 0 12px 32px rgba(0,0,0,.38);
  --radius:    20px;
  --radius-sm: 14px;
  --radius-xs: 10px;
  --max:       1140px;

  --font-display: 'Syne', system-ui, sans-serif;
  --font-body:    'Outfit', system-ui, sans-serif;
  --font-mono:    'DM Mono', monospace;
}

/* Light theme */
[data-theme="light"] {
  --bg:        #f8fafc;
  --bg2:       #ffffff;
  --bg3:       #f1f5f9;
  --card:      rgba(0,0,0,.04);
  --card2:     rgba(0,0,0,.06);
  --card-hover: rgba(0,0,0,.08);
  --text:      #1e293b;
  --muted:     rgba(51,65,85,.70);
  --border:    rgba(51,65,85,.12);
  --border-h:  rgba(123,94,167,.45);

  --accent:    #7b5ea7;
  --accent-b:  #9d7dff;
  --accent-c:  #31d1ff;
  --accent2:   #00e5a0;
  --rose:      #ff5fa0;

  --glow-a:    rgba(123,94,167,.25);
  --glow-b:    rgba(49,209,255,.20);
  --glow-c:    rgba(0,229,160,.18);

  --shadow:    0 20px 50px rgba(0,0,0,.08);
  --shadow-sm: 0 8px 24px rgba(0,0,0,.06);
}

/* ===================== RESET & BASE ===================== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--text);
  background-color: var(--bg);
  background-image:
    radial-gradient(ellipse 900px 600px at 15% -5%, rgba(123,94,167,.28) 0%, transparent 65%),
    radial-gradient(ellipse 700px 500px at 90% 10%, rgba(49,209,255,.18) 0%, transparent 60%),
    radial-gradient(ellipse 600px 400px at 60% 90%, rgba(0,229,160,.15) 0%, transparent 60%);
  line-height: 1.65;
  overflow-x: hidden;
}

/* Animated background mesh */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(200,210,255,.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(200,210,255,.028) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
  z-index: 0;
}

/* Cursor glow orb */
body::after {
  content: '';
  position: fixed;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(123,94,167,.12) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
  transform: translate(-50%, -50%);
  transition: left .08s ease, top .08s ease;
  left: var(--cx, 50%);
  top: var(--cy, 50%);
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.container {
  width: min(var(--max), calc(100% - 2.5rem));
  margin-inline: auto;
  position: relative;
  z-index: 1;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--text);
  color: #050810;
  padding: .6rem .9rem;
  border-radius: 999px;
  z-index: 9999;
  font-weight: 700;
}
.skip-link:focus { left: 1rem; top: 1rem; }

/* ===================== SECTION ===================== */
.section { padding: 6rem 0; position: relative; }
.section--alt {
  background: linear-gradient(180deg, rgba(255,255,255,.018), transparent);
  border-block: 1px solid rgba(200,210,255,.06);
}

.section__head {
  display: flex;
  flex-direction: column;
  gap: .4rem;
  margin-bottom: 2.8rem;
}

.section__label {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent-b);
  opacity: .8;
  margin: 0;
}

.section__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 1.2rem + 1.5vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -.035em;
  line-height: 1.1;
  position: relative;
  display: inline-block;
  background: linear-gradient(110deg, #e8eeff 30%, var(--accent-b) 65%, var(--accent-c) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.section__title::before {
  content: '';
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 40px;
  height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent-b), var(--accent-c));
  box-shadow: 0 0 12px rgba(157,125,255,.7);
  transition: width .5s cubic-bezier(.4,0,.2,1);
}
.section__head:hover .section__title::before { width: 100%; }

.section__subtitle {
  margin: .35rem 0 0;
  color: var(--muted);
  max-width: 58ch;
  font-size: .97rem;
}

/* ===================== TYPOGRAPHY HELPERS ===================== */
.accent  { color: var(--accent-b); }
.muted   { color: var(--muted); }
.lead    { font-size: 1.08rem; color: rgba(232,238,255,.88); line-height: 1.75; }
.mt      { margin-top: 1.4rem; }

/* ===================== SCROLLBAR ===================== */
@media (pointer: fine) {
  ::-webkit-scrollbar { width: 8px; }
  ::-webkit-scrollbar-track { background: var(--bg2); }
  ::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--accent-b), var(--accent-c));
    border-radius: 999px;
    box-shadow: 0 0 8px rgba(157,125,255,.5);
  }
}

/* ===================== NAV ===================== */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(18px) saturate(1.8);
  -webkit-backdrop-filter: blur(18px) saturate(1.8);
  background: rgba(5,8,16,.65);
  border-bottom: 1px solid rgba(200,210,255,.07);
  transition: box-shadow .3s ease, background .3s ease;
}
.header.is-scrolled {
  box-shadow: 0 12px 40px rgba(0,0,0,.4), 0 0 0 1px rgba(200,210,255,.06);
  background: rgba(5,8,16,.82);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: .65rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -.03em;
  color: var(--text);
  transition: opacity .2s;
}
.brand:hover { opacity: .85; }

.brand__dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-b), var(--accent-c));
  box-shadow: 0 0 0 5px rgba(157,125,255,.15), 0 0 16px rgba(157,125,255,.5);
  animation: pulse-dot 2.8s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 0 5px rgba(157,125,255,.15), 0 0 16px rgba(157,125,255,.5); }
  50%       { box-shadow: 0 0 0 8px rgba(157,125,255,.08), 0 0 28px rgba(157,125,255,.7); }
}

.nav__toggle {
  display: none;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.04);
  color: var(--text);
  border-radius: var(--radius-xs);
  padding: .6rem .75rem;
  cursor: pointer;
  transition: background .2s, border-color .2s;
}
.nav__toggle:hover { background: rgba(255,255,255,.07); border-color: var(--border-h); }

.nav__menu {
  display: flex;
  overflow-x: auto;
  scrollbar-width: none;
}
.nav__menu::-webkit-scrollbar { display: none; }
.nav__list {
  display: flex;
  gap: .2rem;
  list-style: none;
  padding: 0;
  margin: 0;
  align-items: center;
  white-space: nowrap;
}
.nav__link {
  display: inline-flex;
  padding: .5rem .8rem;
  border-radius: var(--radius-xs);
  font-size: .9rem;
  font-weight: 500;
  color: rgba(220,228,255,.75);
  border: 1px solid transparent;
  transition: background .22s, border-color .22s, color .22s, transform .22s;
  font-family: var(--font-body);
  letter-spacing: -.01em;
}
.nav__link:hover {
  background: rgba(255,255,255,.06);
  border-color: rgba(200,210,255,.08);
  color: var(--text);
  transform: translateY(-1px);
}
.nav__link.active {
  background: rgba(157,125,255,.14);
  border-color: rgba(157,125,255,.32);
  color: var(--text);
}

/* Theme toggle */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.04);
  color: var(--text);
  border-radius: var(--radius-xs);
  cursor: pointer;
  transition: background .2s, border-color .2s, transform .2s;
  position: relative;
  overflow: hidden;
}
.theme-toggle:hover {
  background: rgba(255,255,255,.07);
  border-color: var(--border-h);
  transform: translateY(-1px);
}
.theme-toggle i {
  position: absolute;
  transition: transform .3s ease, opacity .3s ease;
}
.theme-toggle i:first-child { /* moon */
  transform: rotate(0deg);
  opacity: 1;
}
.theme-toggle i:last-child { /* sun */
  transform: rotate(90deg);
  opacity: 0;
}
[data-theme="light"] .theme-toggle i:first-child {
  transform: rotate(-90deg);
  opacity: 0;
}
[data-theme="light"] .theme-toggle i:last-child {
  transform: rotate(0deg);
  opacity: 1;
}

/* ===================== HERO ===================== */
.hero { padding-top: 5rem; padding-bottom: 6rem; }
.hero__grid {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 3rem;
  align-items: center;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  padding: .4rem .85rem .4rem .5rem;
  border-radius: 999px;
  background: rgba(157,125,255,.08);
  border: 1px solid rgba(157,125,255,.22);
  color: rgba(220,228,255,.9);
  width: fit-content;
  font-size: .85rem;
  font-family: var(--font-mono);
  letter-spacing: .01em;
  animation: fade-in-down .7s ease both;
}
.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent2);
  box-shadow: 0 0 0 4px rgba(0,229,160,.15), 0 0 12px var(--accent2);
  animation: pulse-dot 2s ease-in-out infinite;
  flex-shrink: 0;
}

.hero__title {
  margin: 1rem 0 .7rem;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 1.5rem + 3vw, 4rem);
  line-height: 1.05;
  letter-spacing: -.05em;
  font-weight: 800;
  background: linear-gradient(130deg, #ffffff 20%, #d4c8ff 55%, var(--accent-c) 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: fade-in-up .9s ease .1s both;
}

.typing-text {
  display: block;
  border-right: 2px solid var(--accent-c);
  animation: blink-caret 1s step-end infinite;
}

@keyframes blink-caret {
  from, to { border-color: transparent; }
  50% { border-color: var(--accent-c); }
}

.hero__subtitle {
  margin: 0;
  color: var(--muted);
  max-width: 58ch;
  font-size: 1rem;
  animation: fade-in-up .9s ease .2s both;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: 1.8rem;
  animation: fade-in-up .9s ease .35s both;
}

.hero__meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .75rem;
  margin-top: 2rem;
  animation: fade-in-up .9s ease .5s both;
}

.meta-card {
  display: flex;
  gap: .85rem;
  align-items: center;
  padding: .9rem 1rem;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,.038);
  border: 1px solid rgba(200,210,255,.08);
  transition: border-color .25s, background .25s, transform .25s;
}
.meta-card:hover {
  border-color: rgba(157,125,255,.3);
  background: rgba(157,125,255,.07);
  transform: translateY(-2px);
}
.meta-card i { color: var(--accent-b); font-size: 1.1rem; }
.meta-card__label { margin: 0; font-size: .78rem; color: var(--muted); font-family: var(--font-mono); }
.meta-card__value { margin: 0; font-weight: 700; font-size: .94rem; letter-spacing: -.01em; font-family: var(--font-display); }

/* ===================== BUTTONS ===================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  padding: .8rem 1.2rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-weight: 600;
  font-family: var(--font-body);
  font-size: .94rem;
  transition: transform .22s ease, box-shadow .22s ease, background .22s ease, border-color .22s ease;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  letter-spacing: -.01em;
}
.btn:focus-visible { outline: 3px solid rgba(157,125,255,.45); outline-offset: 3px; }

/* Shimmer sweep on hover */
.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, transparent 40%, rgba(255,255,255,.15) 50%, transparent 60%);
  transform: translateX(-100%);
  transition: transform .55s ease;
}
.btn:hover::before { transform: translateX(100%); }

.btn--primary {
  background: linear-gradient(135deg, var(--accent-b) 0%, #6a48e8 50%, var(--accent-c) 100%);
  background-size: 200% 200%;
  box-shadow: 0 8px 24px rgba(157,125,255,.3), inset 0 1px 0 rgba(255,255,255,.15);
  animation: gradient-shift 4s ease infinite;
}
.btn--primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 40px rgba(157,125,255,.4), 0 0 0 1px rgba(157,125,255,.3);
}

@keyframes gradient-shift {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.btn--ghost {
  background: rgba(255,255,255,.04);
  border-color: rgba(200,210,255,.14);
  color: var(--text);
}
.btn--ghost:hover {
  transform: translateY(-3px);
  background: rgba(255,255,255,.07);
  border-color: rgba(157,125,255,.35);
  box-shadow: 0 10px 28px rgba(0,0,0,.3);
}

.btn--soft {
  background: rgba(0,229,160,.08);
  border-color: rgba(0,229,160,.22);
  color: rgba(200,255,235,.9);
}
.btn--soft:hover {
  transform: translateY(-3px);
  background: rgba(0,229,160,.13);
  border-color: rgba(0,229,160,.4);
  box-shadow: 0 10px 28px rgba(0,229,160,.15);
}

/* ===================== GLASS CARD (HERO) ===================== */
.hero__visual { position: relative; animation: fade-in-right .9s ease .25s both; }

.glass-card {
  border-radius: var(--radius);
  border: 1px solid rgba(200,210,255,.1);
  background: linear-gradient(160deg, rgba(255,255,255,.07) 0%, rgba(255,255,255,.03) 100%);
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255,255,255,.08);
  overflow: hidden;
  backdrop-filter: blur(8px);
  position: relative;
}
.glass-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(200,210,255,.25), transparent);
}

.glass-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .85rem 1.1rem;
  border-bottom: 1px solid rgba(200,210,255,.07);
  background: rgba(255,255,255,.03);
}
.window-dots { display: flex; gap: .45rem; }
.window-dots span {
  width: 11px; height: 11px;
  border-radius: 50%;
}
.window-dots span:nth-child(1) { background: #ff5f57; box-shadow: 0 0 6px rgba(255,95,87,.4); }
.window-dots span:nth-child(2) { background: #ffbd2e; box-shadow: 0 0 6px rgba(255,189,46,.4); }
.window-dots span:nth-child(3) { background: #28ca41; box-shadow: 0 0 6px rgba(40,202,65,.4); }

.glass-card__title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--muted);
}

.glass-card__body { padding: 1.2rem 1.3rem; }

.mono {
  font-family: var(--font-mono);
  font-size: .84rem;
  line-height: 1.9;
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
}
.mono .muted  { color: #7c86c4; font-style: italic; }
.mono .string { color: var(--accent2); }

.chips { display: flex; flex-wrap: wrap; gap: .45rem; margin-top: .9rem; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .28rem .7rem;
  border-radius: 999px;
  font-size: .8rem;
  font-family: var(--font-mono);
  background: rgba(157,125,255,.1);
  border: 1px solid rgba(157,125,255,.25);
  color: rgba(220,228,255,.88);
  transition: background .2s, border-color .2s, transform .2s;
}
.chip:hover {
  background: rgba(157,125,255,.18);
  border-color: rgba(157,125,255,.45);
  transform: translateY(-2px);
}

/* Glow blob behind hero visual */
.hero__bg {
  position: absolute;
  inset: -20% -15% -20% -15%;
  background:
    radial-gradient(500px 350px at 25% 40%, rgba(123,94,167,.35) 0%, transparent 65%),
    radial-gradient(450px 320px at 80% 60%, rgba(49,209,255,.22) 0%, transparent 60%);
  filter: blur(18px);
  z-index: -1;
  pointer-events: none;
}

/* Floating orbit decoration */
.hero__visual::after {
  content: '';
  position: absolute;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  border: 1px dashed rgba(157,125,255,.2);
  top: -30px; right: -30px;
  animation: orbit-spin 20s linear infinite;
  pointer-events: none;
}
@keyframes orbit-spin { to { transform: rotate(360deg); } }

/* ===================== ABOUT ===================== */
.about__grid {
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 3rem;
  align-items: center;
}

.about__text p { margin: 0 0 1rem; }

.about__highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .7rem;
  margin-top: 1.5rem;
}
.highlight {
  display: flex;
  gap: .7rem;
  align-items: flex-start;
  padding: .85rem .95rem;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,.034);
  border: 1px solid rgba(200,210,255,.08);
  transition: border-color .25s, background .25s, transform .25s;
}
.highlight:hover {
  border-color: rgba(157,125,255,.28);
  background: rgba(157,125,255,.07);
  transform: translateY(-2px);
}
.highlight i { color: var(--accent-b); margin-top: .15rem; flex-shrink: 0; }
.highlight p { margin: 0; font-size: .9rem; line-height: 1.55; }

.about__media { position: relative; }
.profile {
  width: 100%;
  border-radius: var(--radius);
  border: 1px solid rgba(200,210,255,.1);
  box-shadow: var(--shadow);
  object-fit: cover;
  aspect-ratio: 4/5;
  filter: saturate(.9) brightness(.95);
  transition: filter .3s;
}
.profile:hover { filter: saturate(1.05) brightness(1); }

.about__card {
  position: absolute;
  bottom: -1.5rem;
  left: -1.5rem;
  padding: 1rem 1.2rem;
  border-radius: var(--radius-sm);
  background: rgba(5,8,16,.85);
  border: 1px solid rgba(157,125,255,.28);
  box-shadow: 0 12px 32px rgba(0,0,0,.45), 0 0 0 1px rgba(157,125,255,.1);
  backdrop-filter: blur(10px);
  max-width: 240px;
}
.about__card-title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent-b);
}
.about__card-text { margin: .3rem 0 0; font-size: .88rem; color: rgba(200,210,255,.85); line-height: 1.45; }

/* ===================== SKILLS ===================== */
.skills__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: .85rem;
}

.skill {
  padding: 1.1rem 1.2rem;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,.038);
  border: 1px solid rgba(200,210,255,.08);
  transition: transform .22s ease, border-color .25s, background .25s, box-shadow .25s;
  position: relative;
  overflow: hidden;
}
.skill::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 3px;
  height: 100%;
  background: linear-gradient(180deg, var(--accent-b), var(--accent-c));
  opacity: 0;
  transition: opacity .3s;
  border-radius: 0 3px 3px 0;
}
.skill:hover {
  transform: translateY(-4px);
  border-color: rgba(157,125,255,.32);
  background: rgba(157,125,255,.07);
  box-shadow: 0 16px 40px rgba(0,0,0,.3), 0 0 20px rgba(157,125,255,.08);
}
.skill:hover::before { opacity: 1; }

.skill__top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: .65rem;
}
.skill__name {
  margin: 0;
  font-weight: 600;
  font-size: .95rem;
  font-family: var(--font-display);
  display: flex;
  align-items: center;
  gap: .5rem;
}
.skill__name i { color: var(--accent-b); }
.skill__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .82rem;
  color: var(--accent2);
  font-weight: 500;
}

.bar {
  height: 6px;
  border-radius: 999px;
  background: rgba(255,255,255,.07);
  overflow: hidden;
  position: relative;
}
.bar::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(255,255,255,.0) 0%, rgba(255,255,255,.08) 50%, rgba(255,255,255,0) 100%);
  background-size: 200% 100%;
  animation: shimmer-bar 2.5s ease infinite;
}
@keyframes shimmer-bar {
  0%   { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.bar__fill {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent-b), var(--accent-c), var(--accent2));
  box-shadow: 0 0 10px rgba(157,125,255,.5);
  width: 0%;
  transition: width 1.2s cubic-bezier(.4,0,.2,1);
}

/* ===================== PROJECTS ===================== */
.project-filters {
  display: flex;
  justify-content: center;
  gap: .5rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.filter-btn {
  padding: .5rem 1rem;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.04);
  color: var(--muted);
  border-radius: var(--radius-xs);
  font-size: .85rem;
  font-weight: 500;
  cursor: pointer;
  transition: background .2s, border-color .2s, color .2s;
}
.filter-btn:hover {
  background: rgba(255,255,255,.07);
  border-color: var(--border-h);
  color: var(--text);
}
.filter-btn.active {
  background: rgba(157,125,255,.14);
  border-color: rgba(157,125,255,.32);
  color: var(--text);
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.1rem;
}

.card {
  padding: 1.3rem 1.3rem 1.1rem;
  border-radius: var(--radius);
  background: rgba(255,255,255,.038);
  border: 1px solid rgba(200,210,255,.08);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  min-height: 270px;
  transition: transform .25s ease, box-shadow .25s, border-color .25s, background .25s;
  position: relative;
  overflow: hidden;
}

/* Top gradient line on card */
.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-b), var(--accent-c));
  opacity: 0;
  transition: opacity .3s;
}
.card:hover {
  transform: translateY(-6px);
  background: rgba(255,255,255,.055);
  border-color: rgba(157,125,255,.3);
  box-shadow: 0 28px 60px rgba(0,0,0,.4), 0 0 30px rgba(157,125,255,.08);
}
.card:hover::before { opacity: 1; }

.card__top { flex: 1; }

.tag {
  display: inline-flex;
  width: fit-content;
  margin: 0 0 .7rem;
  padding: .32rem .7rem;
  font-size: .78rem;
  font-family: var(--font-mono);
  border-radius: 999px;
  background: rgba(157,125,255,.12);
  border: 1px solid rgba(157,125,255,.28);
  color: rgba(220,228,255,.9);
  letter-spacing: .02em;
}

.card__title {
  margin: 0 0 .55rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -.025em;
  line-height: 1.3;
}
.card__desc { margin: 0; color: var(--muted); font-size: .9rem; line-height: 1.65; }
.card__tech { margin: .6rem 0 0; color: rgba(157,125,255,.8); font-size: .85rem; }

.card__actions {
  display: flex;
  justify-content: space-between;
  gap: .75rem;
  margin-top: 1.1rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(200,210,255,.07);
}

.link {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  font-weight: 600;
  font-size: .88rem;
  color: rgba(220,228,255,.9);
  border: 1px solid rgba(200,210,255,.12);
  padding: .5rem .8rem;
  border-radius: var(--radius-xs);
  background: rgba(255,255,255,.03);
  transition: transform .22s, background .22s, border-color .22s, color .22s;
}
.link:hover {
  transform: translateY(-2px);
  background: rgba(157,125,255,.1);
  border-color: rgba(157,125,255,.38);
  color: var(--text);
}

/* ===================== ACHIEVEMENTS ===================== */
.achievements {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.achievement {
  display: flex;
  gap: 1rem;
  padding: 1.2rem;
  border-radius: var(--radius);
  background: rgba(255,255,255,.038);
  border: 1px solid rgba(200,210,255,.08);
  transition: transform .22s, border-color .25s, background .25s, box-shadow .25s;
  position: relative;
  overflow: hidden;
}
.achievement:hover {
  transform: translateY(-4px);
  border-color: rgba(49,209,255,.28);
  background: rgba(49,209,255,.05);
  box-shadow: 0 16px 40px rgba(0,0,0,.3), 0 0 20px rgba(49,209,255,.07);
}

.achievement__icon {
  width: 50px;
  height: 50px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, rgba(49,209,255,.12), rgba(0,229,160,.08));
  border: 1px solid rgba(49,209,255,.22);
  flex: 0 0 auto;
  font-size: 1.15rem;
  color: var(--accent-c);
  transition: transform .25s, box-shadow .25s;
}
.achievement:hover .achievement__icon {
  transform: scale(1.08) rotate(-5deg);
  box-shadow: 0 0 18px rgba(49,209,255,.3);
}
.achievement__title { margin: 0; font-family: var(--font-display); font-size: .97rem; letter-spacing: -.02em; }
.achievement__desc { margin: .25rem 0 0; color: var(--muted); font-size: .88rem; line-height: 1.5; }

/* Certificate "View" button row */
.cert__actions{
  margin-top: .75rem;
  display:flex;
  gap:.6rem;
  flex-wrap:wrap;
}
.cert__actions .link{
  padding:.5rem .7rem;
  font-weight:700;
}

/* ===================== RESUME ===================== */
.resume__grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 1rem;
}

.resume__card {
  padding: 1.4rem;
  border-radius: var(--radius);
  background: rgba(255,255,255,.038);
  border: 1px solid rgba(200,210,255,.08);
  transition: transform .22s, border-color .25s, background .25s, box-shadow .25s;
}
.resume__card:hover {
  transform: translateY(-4px);
  border-color: rgba(157,125,255,.3);
  background: rgba(157,125,255,.05);
  box-shadow: 0 18px 45px rgba(0,0,0,.3), 0 0 22px rgba(157,125,255,.07);
}
.resume__title { margin: 0 0 .7rem; font-family: var(--font-display); letter-spacing: -.025em; font-size: 1.05rem; }

.list { margin: .3rem 0 0; padding-left: 1.2rem; color: rgba(220,228,255,.85); }
.list li { margin: .5rem 0; font-size: .94rem; line-height: 1.55; }
.list li strong { color: var(--text); }

/* ===================== CONTACT ===================== */
.contact__grid {
  display: grid;
  grid-template-columns: .95fr 1.05fr;
  gap: 1rem;
  align-items: start;
}

.contact__info {
  padding: 1.4rem;
  border-radius: var(--radius);
  background: rgba(255,255,255,.038);
  border: 1px solid rgba(200,210,255,.08);
  transition: transform .22s, border-color .25s, background .25s;
}
.contact__info:hover {
  transform: translateY(-4px);
  border-color: rgba(157,125,255,.28);
  background: rgba(157,125,255,.05);
}

.contact-item {
  display: flex;
  gap: .9rem;
  align-items: flex-start;
  padding: .9rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(200,210,255,.08);
  background: rgba(255,255,255,.03);
  transition: border-color .22s, background .22s;
}
.contact-item + .contact-item { margin-top: .75rem; }
.contact-item:hover { border-color: rgba(157,125,255,.28); background: rgba(157,125,255,.06); }
.contact-item i { margin-top: .18rem; color: var(--accent-b); font-size: 1.05rem; }
.contact-item__label { margin: 0; color: var(--muted); font-size: .8rem; font-family: var(--font-mono); }
.contact-item__value { margin: 0; font-weight: 600; color: rgba(220,228,255,.92); font-size: .93rem; }
.contact-item__value:hover { color: var(--accent-b); text-decoration: underline; }

.mini-note {
  margin-top: 1rem;
  display: flex;
  gap: .7rem;
  padding: .9rem 1rem;
  border-radius: var(--radius-sm);
  background: rgba(0,229,160,.07);
  border: 1px solid rgba(0,229,160,.2);
  color: rgba(200,255,230,.85);
  font-size: .88rem;
}
.mini-note p { margin: 0; line-height: 1.5; }
.mini-note i { color: var(--accent2); flex-shrink: 0; margin-top: .1rem; }

/* ===================== FORM ===================== */
.form {
  padding: 1.6rem;
  border-radius: var(--radius);
  background: rgba(255,255,255,.038);
  border: 1px solid rgba(200,210,255,.08);
  transition: transform .22s, border-color .25s, background .25s, box-shadow .25s;
}
.form:hover {
  border-color: rgba(157,125,255,.25);
  box-shadow: 0 20px 50px rgba(0,0,0,.3);
}

.field { display: flex; flex-direction: column; gap: .4rem; }
.field + .field { margin-top: 1rem; }

label {
  font-weight: 600;
  font-size: .88rem;
  letter-spacing: -.01em;
  font-family: var(--font-mono);
  color: rgba(200,210,255,.8);
}

input, textarea {
  border-radius: var(--radius-sm);
  border: 1px solid rgba(200,210,255,.1);
  background: rgba(5,8,16,.5);
  color: var(--text);
  padding: .85rem 1rem;
  font: inherit;
  font-family: var(--font-body);
  font-size: .95rem;
  outline: none;
  transition: border-color .22s, box-shadow .22s, background .22s;
}
textarea { resize: vertical; min-height: 130px; }
input::placeholder, textarea::placeholder { color: rgba(160,170,220,.35); }
input:focus, textarea:focus {
  border-color: rgba(157,125,255,.55);
  box-shadow: 0 0 0 4px rgba(157,125,255,.12), 0 0 16px rgba(157,125,255,.08);
  background: rgba(5,8,16,.7);
}

.error { min-height: 1.1rem; color: rgba(255,100,140,.95); font-weight: 600; font-size: .82rem; font-family: var(--font-mono); }
.form__status { margin: .9rem 0 0; color: rgba(220,228,255,.85); font-size: .9rem; }
.form__status.ok  { color: var(--accent2); }
.form__status.bad { color: rgba(255,100,140,.95); }

/* Submit btn full width */
.form .btn--primary { width: 100%; justify-content: center; margin-top: 1.1rem; }

/* ===================== FOOTER ===================== */
.footer {
  border-top: 1px solid rgba(200,210,255,.06);
  padding: 2.8rem 0 1.4rem;
  position: relative;
}
.footer::before {
  content: '';
  position: absolute;
  top: -1px; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(157,125,255,.4), rgba(49,209,255,.3), transparent);
}

.footer__grid {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem;
}
.footer__brand {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -.04em;
  font-size: 1.2rem;
  background: linear-gradient(120deg, var(--text), var(--accent-b));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.footer__text { margin: .3rem 0 0; font-size: .88rem; }

.footer__social { display: flex; gap: .55rem; }
.icon-btn {
  width: 46px; height: 46px;
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  border: 1px solid rgba(200,210,255,.1);
  background: rgba(255,255,255,.03);
  color: rgba(200,210,255,.7);
  font-size: 1rem;
  transition: transform .22s, background .22s, border-color .22s, color .22s, box-shadow .22s;
}
.icon-btn:hover {
  transform: translateY(-3px);
  background: rgba(157,125,255,.12);
  border-color: rgba(157,125,255,.35);
  color: var(--text);
  box-shadow: 0 8px 20px rgba(157,125,255,.2);
}

.footer__bottom {
  margin-top: 1.8rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1.3rem;
  border-top: 1px solid rgba(200,210,255,.06);
}
.footer__bottom .muted { font-size: .88rem; }

.to-top {
  width: 44px; height: 44px;
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  border: 1px solid rgba(200,210,255,.1);
  background: rgba(255,255,255,.03);
  color: rgba(200,210,255,.7);
  font-size: .9rem;
  transition: transform .25s, background .22s, box-shadow .22s;
}
.to-top:hover {
  background: rgba(157,125,255,.12);
  border-color: rgba(157,125,255,.35);
  transform: translateY(-4px) rotate(-8deg);
  box-shadow: 0 12px 28px rgba(157,125,255,.2);
  color: var(--text);
}

/* ===================== REVEAL ANIMATIONS ===================== */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .75s cubic-bezier(.4,0,.2,1), transform .75s cubic-bezier(.4,0,.2,1);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered delays for grid children */
.cards .card:nth-child(1)       { transition-delay: 0s; }
.cards .card:nth-child(2)       { transition-delay: .12s; }
.cards .card:nth-child(3)       { transition-delay: .24s; }
.achievements > *:nth-child(2)  { transition-delay: .1s; }
.achievements > *:nth-child(3)  { transition-delay: .2s; }
.skills__grid .skill:nth-child(odd)  { transition-delay: 0s; }
.skills__grid .skill:nth-child(even) { transition-delay: .1s; }

/* ===================== KEYFRAMES ===================== */
@keyframes fade-in-up {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fade-in-down {
  from { opacity: 0; transform: translateY(-14px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fade-in-right {
  from { opacity: 0; transform: translateX(28px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ===================== FLOATING PARTICLES (decorative) ===================== */
.hero__particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
}
.particle {
  position: absolute;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--accent-b);
  opacity: 0;
  animation: float-particle var(--dur, 8s) ease-in-out var(--delay, 0s) infinite;
}
@keyframes float-particle {
  0%   { opacity: 0; transform: translateY(0) translateX(0) scale(1); }
  20%  { opacity: .7; }
  80%  { opacity: .5; }
  100% { opacity: 0; transform: translateY(-80px) translateX(var(--dx, 20px)) scale(.3); }
}

/* ===================== SECTION NUMBER DECORATION ===================== */
.section__head { position: relative; }

/* ===================== NEON DIVIDER ===================== */
.neon-divider {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(157,125,255,.5), rgba(49,209,255,.4), transparent);
  margin: 0;
  box-shadow: 0 0 12px rgba(157,125,255,.3);
}

/* ===================== RESPONSIVE ===================== */
@media (max-width: 980px) {
  .hero__grid        { grid-template-columns: 1fr; }
  .hero__visual      { order: -1; }
  .about__grid       { grid-template-columns: 1fr; }
  .skills__grid      { grid-template-columns: 1fr; }
  .cards             { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .achievements      { grid-template-columns: 1fr; }
  .resume__grid      { grid-template-columns: 1fr; }
  .contact__grid     { grid-template-columns: 1fr; }
  .about__card       { position: static; margin-top: 1rem; max-width: 100%; }
  .hero__visual::after { display: none; }
}

@media (max-width: 820px) {
  .nav__toggle { display: inline-flex; }
  .nav__menu {
    position: absolute;
    top: calc(100% + 10px);
    right: 1rem;
    left: 1rem;
    background: rgba(5,8,16,.95);
    border: 1px solid rgba(200,210,255,.1);
    border-radius: 18px;
    padding: .7rem;
    display: none;
    backdrop-filter: blur(16px);
  }
  .nav__menu.is-open { display: block; }
  .nav__list { flex-direction: column; align-items: stretch; }
  .nav__link { width: 100%; justify-content: center; }
  .cards { grid-template-columns: 1fr; }
  .footer__grid { flex-direction: column; }
  .hero__meta { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .hero__title { font-size: clamp(2rem, 8vw, 3rem); }
  .about__highlights { grid-template-columns: 1fr; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { transition: none; }
  .btn, .nav__link, .link, .icon-btn, .card, .skill, .achievement, .resume__card, .contact__info, .form { transition: none; }
  .brand__dot, .dot { animation: none; }
  .hero__badge { animation: none; }
  .hero__title, .hero__subtitle, .hero__cta, .hero__meta, .hero__visual { animation: none; opacity: 1; transform: none; }
  .btn--primary { animation: none; }
  .bar::after { animation: none; }
  @keyframes orbit-spin { to { transform: none; } }
}