/* ==========================================================================
   UMANG PANCHAL — AI & DATA SCIENCE PORTFOLIO
   --------------------------------------------------------------------------
   00. Tokens
   01. Reset & base
   02. Typography & utilities
   03. Background field
   04. Navigation
   05. Hero
   06. Section shell
   07. About
   08. Skills
   09. Experience
   10. Projects
   11. Project modal
   12. Research
   13. Education
   14. Contact & footer
   15. Cursor
   16. Motion / reveal
   17. Responsive
   ========================================================================== */

/* ==========================================================================
   00. TOKENS
   ========================================================================== */
:root{
  /* surfaces */
  --bg:            #06080B;
  --bg-raised:     #0A0D12;
  --bg-card:       #0C1016;
  --bg-inset:      #070A0E;

  /* lines */
  --line:          rgba(255,255,255,0.075);
  --line-mid:      rgba(255,255,255,0.12);
  --line-strong:   rgba(255,255,255,0.20);

  /* text */
  --text:          #E9EEF6;
  --text-2:        #A6B1C2;
  --text-3:        #6C7889;
  --text-4:        #46505E;

  /* accents */
  --blue:          #4D8BFF;
  --blue-deep:     #2563EB;
  --cyan:          #22D3EE;
  --violet:        #8B5CF6;
  --amber:         #F5A524;
  --green:         #34D399;

  --blue-soft:     rgba(77,139,255,0.12);
  --cyan-soft:     rgba(34,211,238,0.11);
  --violet-soft:   rgba(139,92,246,0.12);

  /* type */
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* scale */
  --step--1: clamp(0.78rem, 0.76rem + 0.1vw, 0.84rem);
  --step-0:  clamp(0.95rem, 0.92rem + 0.15vw, 1.02rem);
  --step-1:  clamp(1.1rem, 1.04rem + 0.3vw, 1.3rem);
  --step-2:  clamp(1.45rem, 1.3rem + 0.7vw, 2rem);
  --step-3:  clamp(1.9rem, 1.6rem + 1.5vw, 3rem);
  --step-4:  clamp(2.3rem, 1.35rem + 3vw, 3.75rem);

  /* space */
  --edge:      clamp(20px, 5vw, 88px);
  --section-y: clamp(84px, 11vw, 172px);
  --nav-h:     68px;

  /* effect */
  --radius:    14px;
  --radius-lg: 20px;
  --radius-sm: 9px;
  --shadow:    0 24px 60px -28px rgba(0,0,0,0.85);
  --ease:      cubic-bezier(0.22, 1, 0.36, 1);
}

/* ==========================================================================
   01. RESET & BASE
   ========================================================================== */
*, *::before, *::after{ box-sizing: border-box; }

html{
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 26px);
  -webkit-text-size-adjust: 100%;
}

body{
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: var(--step-0);
  line-height: 1.62;
  font-feature-settings: "cv11", "ss01";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body.menu-open{ overflow: hidden; }
body.modal-open{ overflow: hidden; }

img, svg, canvas{ display: block; max-width: 100%; }
a{ color: inherit; text-decoration: none; }
ul, ol{ margin: 0; padding: 0; list-style: none; }
p{ margin: 0; }
button{ font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

h1, h2, h3, h4, h5{
  margin: 0;
  font-weight: 600;
  letter-spacing: -0.028em;
  line-height: 1.08;
}

::selection{ background: rgba(77,139,255,0.3); color: #fff; }

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

/* skip link */
.skip-link{
  position: absolute;
  left: 12px; top: -60px;
  z-index: 999;
  padding: 10px 16px;
  background: var(--blue);
  color: #fff;
  border-radius: 8px;
  font-size: var(--step--1);
  transition: top .2s var(--ease);
}
.skip-link:focus{ top: 12px; }

/* ==========================================================================
   02. TYPOGRAPHY & UTILITIES
   ========================================================================== */
.mono{
  font-family: var(--mono);
  font-size: var(--step--1);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.shell{
  width: 100%;
  max-width: 1320px;
  margin-inline: auto;
  padding-inline: var(--edge);
}

.gradient-text{
  background: linear-gradient(100deg, var(--text) 10%, var(--cyan) 55%, var(--blue) 92%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lede{
  color: var(--text-2);
  font-size: var(--step-1);
  line-height: 1.65;
  max-width: 62ch;
}

/* buttons */
.btn{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 22px;
  border-radius: 100px;
  font-size: var(--step--1);
  font-weight: 500;
  letter-spacing: 0.01em;
  border: 1px solid transparent;
  transition: transform .3s var(--ease), background .3s var(--ease),
              border-color .3s var(--ease), color .3s var(--ease), box-shadow .3s var(--ease);
  white-space: nowrap;
}
.btn svg{ width: 15px; height: 15px; flex: none; transition: transform .3s var(--ease); }
.btn:hover{ transform: translateY(-2px); }
.btn:hover svg{ transform: translateX(3px); }

.btn-primary{
  background: linear-gradient(120deg, var(--blue-deep), var(--blue));
  color: #fff;
  box-shadow: 0 12px 30px -14px rgba(77,139,255,0.9);
}
.btn-primary:hover{ box-shadow: 0 18px 40px -14px rgba(77,139,255,1); }

.btn-ghost{
  border-color: var(--line-mid);
  color: var(--text);
  background: rgba(255,255,255,0.015);
}
.btn-ghost:hover{ border-color: var(--line-strong); background: rgba(255,255,255,0.05); }

.btn-sm{ padding: 9px 16px; font-size: 0.76rem; }

/* tags */
.tag{
  display: inline-block;
  padding: 5px 11px;
  border: 1px solid var(--line);
  border-radius: 100px;
  background: rgba(255,255,255,0.02);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.02em;
  color: var(--text-2);
  transition: border-color .25s var(--ease), color .25s var(--ease), background .25s var(--ease);
}
.tag:hover{ border-color: rgba(77,139,255,0.45); color: var(--text); background: var(--blue-soft); }

.tag-row{ display: flex; flex-wrap: wrap; gap: 7px; }

/* status pill */
.pill{
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 12px;
  border-radius: 100px;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}
.pill .dot{ width: 6px; height: 6px; border-radius: 50%; flex: none; }
.pill-live{ background: rgba(52,211,153,0.1); color: #6EE7B7; border: 1px solid rgba(52,211,153,0.24); }
.pill-live .dot{ background: var(--green); box-shadow: 0 0 0 0 rgba(52,211,153,0.6); animation: pulse 2.4s infinite; }
.pill-research{ background: var(--violet-soft); color: #C4B5FD; border: 1px solid rgba(139,92,246,0.26); }
.pill-research .dot{ background: var(--violet); }

@keyframes pulse{
  0%{ box-shadow: 0 0 0 0 rgba(52,211,153,0.55); }
  70%{ box-shadow: 0 0 0 7px rgba(52,211,153,0); }
  100%{ box-shadow: 0 0 0 0 rgba(52,211,153,0); }
}

/* ==========================================================================
   03. BACKGROUND FIELD
   ========================================================================== */
.bg-field{
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background:
    radial-gradient(1100px 600px at 78% -8%, rgba(77,139,255,0.09), transparent 62%),
    radial-gradient(820px 520px at 6% 12%, rgba(139,92,246,0.065), transparent 60%),
    radial-gradient(900px 700px at 50% 108%, rgba(34,211,238,0.05), transparent 65%);
}
.bg-grid{
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.026) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.026) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(circle at 50% 22%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(circle at 50% 22%, #000 0%, transparent 78%);
}

/* ==========================================================================
   04. NAVIGATION
   ========================================================================== */
.nav{
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: background .35s var(--ease), border-color .35s var(--ease), backdrop-filter .35s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.scrolled{
  background: rgba(6,8,11,0.78);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  border-bottom-color: var(--line);
}

.nav-inner{
  width: 100%;
  max-width: 1320px;
  margin-inline: auto;
  padding-inline: var(--edge);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand{ display: flex; align-items: center; gap: 11px; }
.brand-mark{
  width: 32px; height: 32px;
  border-radius: 9px;
  display: grid;
  place-items: center;
  background: linear-gradient(140deg, rgba(77,139,255,0.22), rgba(139,92,246,0.18));
  border: 1px solid var(--line-mid);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text);
}
.brand-text{ display: flex; flex-direction: column; line-height: 1.2; }
.brand-name{ font-size: 0.86rem; font-weight: 600; letter-spacing: -0.01em; }
.brand-role{ font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.14em; color: var(--text-3); text-transform: uppercase; }

.nav-links{ display: flex; align-items: center; gap: 2px; }
.nav-links a{
  position: relative;
  padding: 8px 13px;
  font-size: 0.84rem;
  color: var(--text-3);
  border-radius: 8px;
  transition: color .25s var(--ease), background .25s var(--ease);
}
.nav-links a:hover{ color: var(--text); background: rgba(255,255,255,0.04); }
.nav-links a.active{ color: var(--text); }
.nav-links a.active::after{
  content: "";
  position: absolute;
  left: 13px; right: 13px; bottom: 2px;
  height: 1.5px;
  background: linear-gradient(90deg, var(--cyan), var(--blue));
  border-radius: 2px;
}

.nav-actions{ display: flex; align-items: center; gap: 10px; }

.nav-progress{
  position: absolute;
  left: 0; bottom: 0;
  height: 1.5px;
  width: 0%;
  background: linear-gradient(90deg, var(--violet), var(--blue) 45%, var(--cyan));
  box-shadow: 0 0 12px rgba(34,211,238,0.5);
}

/* hamburger */
.nav-toggle{
  display: none;
  width: 42px; height: 42px;
  border: 1px solid var(--line-mid);
  border-radius: 11px;
  position: relative;
  background: rgba(255,255,255,0.02);
}
.nav-toggle span{
  position: absolute;
  left: 12px;
  width: 18px; height: 1.5px;
  background: var(--text);
  border-radius: 2px;
  transition: transform .32s var(--ease), opacity .2s var(--ease);
}
.nav-toggle span:nth-child(1){ top: 15px; }
.nav-toggle span:nth-child(2){ top: 20.5px; }
.nav-toggle span:nth-child(3){ top: 26px; }
.nav-toggle[aria-expanded="true"] span:nth-child(1){ transform: translateY(5.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2){ opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3){ transform: translateY(-5.5px) rotate(-45deg); }

/* mobile menu */
.mobile-menu{
  position: fixed;
  inset: 0;
  z-index: 190;
  background: rgba(6,8,11,0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: calc(var(--nav-h) + 32px) var(--edge) 40px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  /* visibility flips instantly on open, and is delayed on close so the
     panel is focusable the moment it is shown */
  transition: opacity .32s var(--ease), transform .32s var(--ease), visibility 0s linear .32s;
}
.mobile-menu.open{
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  transition: opacity .32s var(--ease), transform .32s var(--ease), visibility 0s linear 0s;
}

.mobile-menu nav{ display: flex; flex-direction: column; }
.mobile-menu nav a{
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
  font-size: clamp(1.2rem, 5.4vw, 1.7rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  opacity: 0;
  transform: translateY(12px);
}
.mobile-menu.open nav a{ animation: menuIn .45s var(--ease) forwards; }
.mobile-menu nav a .num{
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--blue);
  letter-spacing: 0.1em;
}
@keyframes menuIn{ to{ opacity: 1; transform: translateY(0); } }

.mobile-foot{ display: flex; flex-wrap: wrap; gap: 18px; padding-top: 26px; }
.mobile-foot a{ font-family: var(--mono); font-size: 0.74rem; color: var(--text-3); letter-spacing: 0.06em; }
.mobile-foot a:hover{ color: var(--cyan); }

/* ==========================================================================
   05. HERO
   ========================================================================== */
.hero{
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-top: calc(var(--nav-h) + 44px);
  padding-bottom: 72px;
  overflow: hidden;
}

.hero-grid{
  display: grid;
  grid-template-columns: minmax(0, 1.14fr) minmax(0, 0.86fr);
  gap: clamp(32px, 4vw, 60px);
  align-items: center;
  width: 100%;
}

.hero-eyebrow{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px 6px 10px;
  border: 1px solid var(--line-mid);
  border-radius: 100px;
  background: rgba(255,255,255,0.02);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-2);
  margin-bottom: 26px;
}
.hero-eyebrow .dot{
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan);
}

.hero-kicker{
  font-family: var(--mono);
  font-size: clamp(0.62rem, 1.1vw, 0.7rem);
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--text-4);
  margin-bottom: 14px;
}

/* the name is the first thing a visitor reads */
.hero-title{
  font-size: clamp(2.9rem, 1.4rem + 5vw, 5.6rem);
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 0.95;
  margin-bottom: 18px;
  background: linear-gradient(180deg, var(--text) 42%, #9FB2CC 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-role{
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 13px;
  padding-bottom: 20px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--text-2);
  max-width: 54ch;
}
.hero-role .sep{ width: 4px; height: 4px; border-radius: 50%; background: var(--text-4); }
.hero-role .accent{ color: var(--cyan); }

.hero-tagline{
  font-size: clamp(1.15rem, 0.95rem + 0.85vw, 1.7rem);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.25;
  color: var(--text);
  max-width: 21ch;
  margin-bottom: 18px;
}
/* solid accent: a clipped gradient breaks up when the phrase wraps */
.hero-tagline .gradient-text{
  background: none;
  -webkit-background-clip: border-box;
  background-clip: border-box;
  color: var(--cyan);
}

.hero-lede{
  color: var(--text-2);
  max-width: 56ch;
  font-size: clamp(0.95rem, 0.9rem + 0.2vw, 1.06rem);
  margin-bottom: 34px;
}

.hero-cta{ display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 34px; }

.hero-links{
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 22px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
.hero-links a{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
  transition: color .25s var(--ease);
}
.hero-links a svg{ width: 15px; height: 15px; }
.hero-links a:hover{ color: var(--text); }

/* ---------- profile / identity card ---------- */
.id-card{
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.006));
  box-shadow: var(--shadow);
  overflow: hidden;
  opacity: 0;
  transform: translateY(18px);
  animation: heroIn .9s var(--ease) .35s forwards;
}

.id-visual{
  position: relative;
  aspect-ratio: 16 / 7;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(circle at 50% 60%, rgba(77,139,255,0.08), transparent 70%),
    rgba(255,255,255,0.01);
  overflow: hidden;
}
.id-visual canvas{ position: absolute; inset: 0; width: 100%; height: 100%; }
.id-visual::before{
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(circle at 50% 50%, #000 20%, transparent 76%);
  -webkit-mask-image: radial-gradient(circle at 50% 50%, #000 20%, transparent 76%);
}
.hero-visual-label{
  position: absolute;
  left: 16px; bottom: 14px;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-4);
  z-index: 2;
}
.hero-visual-label span{ color: var(--cyan); }

/* card head: monogram / photo + name */
.id-head{
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 22px clamp(20px, 2.4vw, 26px) 20px;
  border-bottom: 1px solid var(--line);
}
.id-avatar{
  width: 58px; height: 58px;
  flex: none;
  border-radius: 16px;
  display: grid;
  place-items: center;
  object-fit: cover;
  font-family: var(--mono);
  font-size: 1.02rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--text);
  background: linear-gradient(140deg, rgba(77,139,255,0.28), rgba(139,92,246,0.2));
  border: 1px solid var(--line-mid);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.08);
}
.id-name{
  font-size: 1.16rem;
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.2;
}
.id-title{
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-top: 5px;
}

/* card detail rows */
.id-rows{
  margin: 0;
  padding: 6px clamp(20px, 2.4vw, 26px) 22px;
}
.id-row{
  display: grid;
  grid-template-columns: 86px 1fr;
  gap: 14px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}
.id-row:last-child{ border-bottom: 0; padding-bottom: 2px; }
.id-row dt{
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-4);
  padding-top: 3px;
}
.id-row dd{
  margin: 0;
  font-size: 0.88rem;
  color: var(--text);
  line-height: 1.42;
}
.id-row dd span{
  display: block;
  margin-top: 3px;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.02em;
  color: var(--text-3);
}

.hero-corner{
  position: absolute;
  width: 13px; height: 13px;
  border: 1px solid var(--line-strong);
  z-index: 2;
}
.hero-corner.tl{ top: -1px; left: -1px; border-right: 0; border-bottom: 0; }
.hero-corner.tr{ top: -1px; right: -1px; border-left: 0; border-bottom: 0; }
.hero-corner.bl{ bottom: -1px; left: -1px; border-right: 0; border-top: 0; }
.hero-corner.br{ bottom: -1px; right: -1px; border-left: 0; border-top: 0; }

.scroll-hint{
  position: absolute;
  left: var(--edge);
  bottom: 26px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-4);
}
.scroll-hint .rail{
  position: relative;
  width: 46px; height: 1px;
  background: var(--line-mid);
  overflow: hidden;
}
.scroll-hint .rail::after{
  content: "";
  position: absolute;
  left: -40%; top: 0;
  width: 40%; height: 100%;
  background: var(--cyan);
  animation: railRun 2.6s var(--ease) infinite;
}
@keyframes railRun{ to{ left: 100%; } }

/* ---------- quick facts strip ---------- */
.stats-strip{
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,0.012);
}
.stats-grid{
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.stat{ padding: 26px 0 28px; }
.stat + .stat{ padding-left: clamp(16px, 2.5vw, 34px); border-left: 1px solid var(--line); }
.stat-num{
  font-size: clamp(1.6rem, 1.2rem + 1.2vw, 2.3rem);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1;
  margin-bottom: 9px;
  background: linear-gradient(120deg, var(--text), var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.stat-label{
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
  line-height: 1.6;
  max-width: 24ch;
}

/* ==========================================================================
   06. SECTION SHELL
   ========================================================================== */
.section{ padding-block: var(--section-y); position: relative; }
.section + .section{ border-top: 1px solid var(--line); }

.section-head{ margin-bottom: clamp(40px, 5vw, 66px); }
.section-tag{
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 20px;
}
.section-tag::before{
  content: "";
  width: 30px; height: 1px;
  background: linear-gradient(90deg, var(--blue), transparent);
}
.section-tag .idx{ color: var(--blue); }

.section-head h2{
  font-size: var(--step-3);
  letter-spacing: -0.035em;
  margin-bottom: 18px;
  max-width: 22ch;
}
.section-head .lede{ max-width: 64ch; }

/* card base */
.card{
  position: relative;
  background: linear-gradient(180deg, rgba(255,255,255,0.026), rgba(255,255,255,0.008));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color .35s var(--ease), transform .35s var(--ease), background .35s var(--ease);
}
.card:hover{ border-color: var(--line-mid); }

/* ==========================================================================
   07. ABOUT
   ========================================================================== */
.about-grid{
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: clamp(34px, 5vw, 76px);
  align-items: start;
}
.about-copy p + p{ margin-top: 18px; }
.about-copy p{ color: var(--text-2); max-width: 60ch; }
.about-copy strong{ color: var(--text); font-weight: 500; }

.about-facts{
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 12px;
  margin-top: 34px;
}
.fact{ padding: 16px 18px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: rgba(255,255,255,0.014); }
.fact .k{ font-family: var(--mono); font-size: 0.64rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-4); margin-bottom: 7px; }
.fact .v{ font-size: 0.92rem; color: var(--text); line-height: 1.4; }
.fact .v em{ font-style: normal; color: var(--cyan); }

/* pipeline visual */
.pipeline{
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255,255,255,0.022), rgba(255,255,255,0.004));
  padding: clamp(20px, 3vw, 30px);
  position: relative;
  overflow: hidden;
}
.pipeline-title{
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-4);
  margin-bottom: 22px;
  display: flex;
  justify-content: space-between;
}
.pipe-steps{ display: flex; flex-direction: column; }
.pipe-step{
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 13px 15px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: rgba(255,255,255,0.015);
  transition: border-color .4s var(--ease), background .4s var(--ease), transform .4s var(--ease);
}
.pipe-step.lit{
  border-color: rgba(77,139,255,0.42);
  background: var(--blue-soft);
  transform: translateX(4px);
}
.pipe-step .ico{
  width: 30px; height: 30px;
  flex: none;
  display: grid; place-items: center;
  border-radius: 8px;
  border: 1px solid var(--line-mid);
  background: rgba(255,255,255,0.03);
  color: var(--text-2);
  transition: color .4s var(--ease), border-color .4s var(--ease);
}
.pipe-step.lit .ico{ color: var(--cyan); border-color: rgba(34,211,238,0.4); }
.pipe-step .ico svg{ width: 15px; height: 15px; }
.pipe-step .txt .l{ font-size: 0.86rem; font-weight: 500; letter-spacing: -0.01em; }
.pipe-step .txt .d{ font-family: var(--mono); font-size: 0.64rem; color: var(--text-4); letter-spacing: 0.05em; }

.pipe-link{
  width: 1px; height: 16px;
  margin-left: 30px;
  background: linear-gradient(180deg, var(--line-mid), rgba(77,139,255,0.5));
  position: relative;
}
.pipe-link::after{
  content: "";
  position: absolute;
  left: -2px; top: 0;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--cyan);
  opacity: 0;
  animation: pipeFlow 3.4s linear infinite;
}
.pipe-link:nth-of-type(2)::after{ animation-delay: .5s; }
.pipe-link:nth-of-type(4)::after{ animation-delay: 1s; }
.pipe-link:nth-of-type(6)::after{ animation-delay: 1.5s; }
@keyframes pipeFlow{
  0%{ transform: translateY(0); opacity: 0; }
  15%{ opacity: 1; }
  85%{ opacity: 1; }
  100%{ transform: translateY(16px); opacity: 0; }
}

/* ==========================================================================
   08. SKILLS
   ========================================================================== */
.skills-grid{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 14px;
}
.skill-card{ padding: 22px 22px 24px; overflow: hidden; }
.skill-card::before{
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%; height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent, var(--blue)), transparent);
  opacity: 0;
  transition: opacity .4s var(--ease);
}
.skill-card:hover::before{ opacity: .8; }
.skill-card:hover{ transform: translateY(-3px); }

.skill-head{ display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.skill-icon{
  width: 34px; height: 34px;
  display: grid; place-items: center;
  border-radius: 9px;
  border: 1px solid var(--line-mid);
  background: rgba(255,255,255,0.03);
  color: var(--accent, var(--blue));
  flex: none;
}
.skill-icon svg{ width: 17px; height: 17px; }
.skill-head h3{ font-size: 0.98rem; letter-spacing: -0.015em; }
.skill-head .count{
  margin-left: auto;
  font-family: var(--mono);
  font-size: 0.64rem;
  color: var(--text-4);
  letter-spacing: 0.08em;
}

/* ==========================================================================
   09. EXPERIENCE
   ========================================================================== */
.timeline{ position: relative; padding-left: 0; }
.tl-item{
  display: grid;
  grid-template-columns: 168px 1fr;
  gap: clamp(16px, 3vw, 44px);
  padding: 28px 0;
  border-top: 1px solid var(--line);
  transition: background .35s var(--ease);
}
.tl-item:last-child{ border-bottom: 1px solid var(--line); }
.tl-when{
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--text-3);
  padding-top: 4px;
}
.tl-when .marker{
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 8px;
  color: var(--blue);
  font-size: 0.64rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.tl-when .marker::before{
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  border: 1.5px solid var(--blue);
}
.tl-body h3{ font-size: var(--step-1); margin-bottom: 6px; letter-spacing: -0.02em; }
.tl-org{
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--cyan);
  letter-spacing: 0.05em;
  margin-bottom: 14px;
}
.tl-body ul li{
  position: relative;
  padding-left: 18px;
  color: var(--text-2);
  font-size: 0.92rem;
  margin-bottom: 7px;
  max-width: 68ch;
}
.tl-body ul li::before{
  content: "";
  position: absolute;
  left: 0; top: 0.62em;
  width: 5px; height: 1px;
  background: var(--text-4);
}
.tl-body .tag-row{ margin-top: 14px; }

/* ==========================================================================
   10. PROJECTS
   ========================================================================== */
.arc-strip{
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 6px;
  margin-bottom: 46px;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: 100px;
  background: rgba(255,255,255,0.014);
  width: fit-content;
  max-width: 100%;
}
.arc-strip span{
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-3);
  white-space: nowrap;
}
.arc-strip span.on{ color: var(--text); }
.arc-strip i{ color: var(--blue); font-style: normal; font-size: 0.7rem; }

.projects-list{ display: flex; flex-direction: column; gap: 20px; }

.project{
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.02fr);
  gap: clamp(22px, 3.4vw, 52px);
  align-items: center;
  padding: clamp(22px, 3vw, 34px);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.project::after{
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(620px 320px at var(--mx, 50%) var(--my, 0%), rgba(77,139,255,0.09), transparent 62%);
  opacity: 0;
  transition: opacity .45s var(--ease);
  pointer-events: none;
}
.project:hover::after{ opacity: 1; }
.project:hover{ transform: translateY(-3px); border-color: var(--line-mid); }
.project:nth-child(even) .project-body{ order: 2; }

.project-top{ display: flex; align-items: center; gap: 12px; margin-bottom: 18px; flex-wrap: wrap; }
.project-num{
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  color: var(--blue);
}
.project-cat{
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-4);
}
.project-top .pill{ margin-left: auto; }

.project h3{ font-size: var(--step-2); letter-spacing: -0.032em; margin-bottom: 8px; }
.project-sub{
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--cyan);
  letter-spacing: 0.03em;
  margin-bottom: 16px;
}
.project-desc{ color: var(--text-2); font-size: 0.94rem; margin-bottom: 18px; max-width: 56ch; }

.project-highlights{ display: flex; flex-direction: column; gap: 7px; margin-bottom: 20px; }
.project-highlights li{
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 0.87rem;
  color: var(--text-2);
}
.project-highlights li svg{ width: 14px; height: 14px; flex: none; margin-top: 4px; color: var(--blue); }

.project-actions{ display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }

/* project visual shells */
.pv{
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(165deg, rgba(255,255,255,0.03), rgba(255,255,255,0.005));
  padding: 14px;
  overflow: hidden;
  min-height: 260px;
}
.pv-bar{ display: flex; align-items: center; gap: 6px; margin-bottom: 12px; }
.pv-bar i{ width: 7px; height: 7px; border-radius: 50%; background: var(--line-strong); display: block; }
.pv-bar .t{
  margin-left: 8px;
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  color: var(--text-4);
  text-transform: uppercase;
}
.pv svg{ width: 100%; height: auto; }

/* ==========================================================================
   11. PROJECT MODAL
   ========================================================================== */
.modal{
  position: fixed;
  inset: 0;
  z-index: 300;
  display: grid;
  place-items: end center;
  opacity: 0;
  visibility: hidden;
  transition: opacity .3s var(--ease), visibility 0s linear .3s;
}
.modal.open{
  opacity: 1;
  visibility: visible;
  transition: opacity .3s var(--ease), visibility 0s linear 0s;
}
.modal-backdrop{
  position: absolute;
  inset: 0;
  background: rgba(3,5,8,0.82);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.modal-panel{
  position: relative;
  width: min(920px, 100%);
  max-height: 92svh;
  overflow-y: auto;
  overscroll-behavior: contain;
  background: var(--bg-raised);
  border: 1px solid var(--line-mid);
  border-bottom: 0;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  padding: clamp(24px, 4vw, 44px);
  transform: translateY(28px);
  transition: transform .38s var(--ease);
  box-shadow: var(--shadow);
}
.modal.open .modal-panel{ transform: translateY(0); }

.modal-close{
  position: sticky;
  top: 0;
  float: right;
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border: 1px solid var(--line-mid);
  border-radius: 50%;
  background: rgba(10,13,18,0.9);
  color: var(--text-2);
  transition: color .25s var(--ease), border-color .25s var(--ease), transform .25s var(--ease);
  z-index: 3;
}
.modal-close:hover{ color: var(--text); border-color: var(--line-strong); transform: rotate(90deg); }
.modal-close svg{ width: 16px; height: 16px; }

.modal-eyebrow{
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 12px;
}
.modal-panel h3{ font-size: var(--step-2); letter-spacing: -0.032em; margin-bottom: 10px; padding-right: 48px; }
.modal-sub{ font-family: var(--mono); font-size: 0.76rem; color: var(--cyan); margin-bottom: 26px; }

.modal-block{ padding-top: 22px; margin-top: 22px; border-top: 1px solid var(--line); }
.modal-block:first-of-type{ border-top: 0; margin-top: 0; padding-top: 0; }
.modal-block h4{
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 12px;
  font-weight: 500;
}
.modal-block p{ color: var(--text-2); font-size: 0.93rem; max-width: 70ch; }
.modal-block p + p{ margin-top: 12px; }
.modal-block ul{ display: grid; grid-template-columns: repeat(auto-fit, minmax(220px,1fr)); gap: 6px 22px; }
.modal-block ul li{
  position: relative;
  padding-left: 17px;
  font-size: 0.88rem;
  color: var(--text-2);
  padding-block: 2px;
}
.modal-block ul li::before{
  content: "";
  position: absolute;
  left: 0; top: 0.72em;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: rgba(77,139,255,0.6);
}

/* flow diagram inside modal */
.flow{
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--bg-inset);
}
.flow .node{
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  padding: 7px 11px;
  border: 1px solid var(--line-mid);
  border-radius: 7px;
  background: rgba(255,255,255,0.025);
  color: var(--text-2);
  white-space: nowrap;
}
.flow .node.hl{ border-color: rgba(34,211,238,0.4); color: var(--cyan); background: var(--cyan-soft); }
.flow .arr{ color: var(--text-4); font-size: 0.7rem; }

/* challenge / solution / result */
.csr{ display: grid; grid-template-columns: repeat(auto-fit, minmax(228px, 1fr)); gap: 12px; }
.csr-card{
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.015);
}
.csr-card .k{
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 9px;
}
.csr-card:nth-child(1) .k{ color: var(--amber); }
.csr-card:nth-child(2) .k{ color: var(--blue); }
.csr-card:nth-child(3) .k{ color: var(--green); }
.csr-card p{ font-size: 0.87rem; color: var(--text-2); }

.modal-links{ display: flex; flex-wrap: wrap; gap: 10px; }

/* ==========================================================================
   12. RESEARCH
   ========================================================================== */
.research-hero{
  padding: clamp(24px, 3.4vw, 42px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background:
    radial-gradient(760px 400px at 82% 0%, rgba(139,92,246,0.1), transparent 62%),
    linear-gradient(180deg, rgba(255,255,255,0.026), rgba(255,255,255,0.006));
  margin-bottom: 20px;
}
.research-hero h3{ font-size: var(--step-2); letter-spacing: -0.032em; margin-bottom: 14px; max-width: 24ch; }

.research-cols{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(262px, 1fr));
  gap: 20px;
  margin-top: 30px;
}
.research-col h4{
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--violet);
  margin-bottom: 11px;
  font-weight: 500;
}
.research-col p{ color: var(--text-2); font-size: 0.9rem; }

.fed-diagram{
  padding: clamp(18px, 3vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(255,255,255,0.022), rgba(255,255,255,0.004));
  margin-bottom: 20px;
  overflow: hidden;
}
.diagram-label{
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-4);
  margin-bottom: 20px;
}
.diagram-label .note{ color: var(--violet); letter-spacing: 0.1em; }
.fed-svg-wrap{ overflow-x: auto; }
.fed-svg-wrap svg{ width: 100%; min-width: 540px; height: auto; }

.research-split{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}
.panel{
  padding: clamp(20px, 3vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255,255,255,0.022), rgba(255,255,255,0.004));
}
.panel h4{
  font-size: 1rem;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}
.panel .panel-note{
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.1em;
  color: var(--text-4);
  text-transform: uppercase;
  margin-bottom: 20px;
}

/* privacy chain */
.chain{ display: flex; flex-direction: column; gap: 0; }
.chain-step{
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(255,255,255,0.015);
  font-size: 0.88rem;
}
.chain-step .n{
  font-family: var(--mono);
  font-size: 0.62rem;
  color: var(--violet);
  letter-spacing: 0.1em;
  width: 20px;
  flex: none;
}
.chain-step .d{ font-family: var(--mono); font-size: 0.64rem; color: var(--text-4); margin-left: auto; text-align: right; }
.chain-arrow{
  height: 14px;
  width: 1px;
  margin-left: 27px;
  background: linear-gradient(180deg, var(--line-mid), rgba(139,92,246,0.55));
}
.privacy-note{
  margin-top: 18px;
  padding: 13px 15px;
  border: 1px solid rgba(139,92,246,0.24);
  border-radius: 10px;
  background: var(--violet-soft);
  font-size: 0.84rem;
  color: #D8CCFB;
  display: flex;
  gap: 10px;
  align-items: flex-start;
}
.privacy-note svg{ width: 15px; height: 15px; flex: none; margin-top: 3px; }

/* comparison */
.compare{ display: flex; flex-direction: column; gap: 10px; }
.cmp-row{
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 14px;
  align-items: center;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(255,255,255,0.015);
  transition: border-color .3s var(--ease), background .3s var(--ease);
}
.cmp-row:hover{ border-color: var(--line-mid); }
.cmp-row.focus{ border-color: rgba(139,92,246,0.42); background: var(--violet-soft); }
.cmp-name{ font-size: 0.9rem; font-weight: 500; letter-spacing: -0.01em; }
.cmp-desc{ font-family: var(--mono); font-size: 0.64rem; color: var(--text-4); letter-spacing: 0.04em; margin-top: 3px; }
.cmp-meters{ display: flex; gap: 14px; }
.meter{ text-align: center; }
.meter .lbl{ font-family: var(--mono); font-size: 0.55rem; letter-spacing: 0.12em; color: var(--text-4); text-transform: uppercase; margin-bottom: 5px; }
.meter .bars{ display: flex; gap: 3px; }
.meter .bars i{ width: 5px; height: 13px; border-radius: 1px; background: rgba(255,255,255,0.09); display: block; }
.meter .bars i.on{ background: var(--blue); }
.meter.priv .bars i.on{ background: var(--violet); }
.cmp-caveat{
  margin-top: 14px;
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.04em;
  color: var(--text-4);
  line-height: 1.7;
}

/* ==========================================================================
   13. EDUCATION
   ========================================================================== */
.edu-grid{ display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 14px; margin-bottom: 20px; }
.edu-card{ padding: 26px; }
.edu-card .deg-top{ display: flex; justify-content: space-between; align-items: flex-start; gap: 14px; margin-bottom: 12px; }
.edu-card h3{ font-size: var(--step-1); letter-spacing: -0.022em; }
.edu-when{ font-family: var(--mono); font-size: 0.66rem; color: var(--text-4); letter-spacing: 0.06em; white-space: nowrap; padding-top: 4px; }
.edu-org{ font-family: var(--mono); font-size: 0.76rem; color: var(--cyan); letter-spacing: 0.03em; margin-bottom: 18px; }
.edu-score{
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: rgba(255,255,255,0.02);
  margin-bottom: 16px;
}
.edu-score .num{ font-size: 1.25rem; font-weight: 600; letter-spacing: -0.03em; color: var(--text); }
.edu-score .lab{ font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-4); }
.edu-course{ font-size: 0.86rem; color: var(--text-3); }
.edu-course span{ color: var(--text-2); }

.extras{ display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 14px; }
.extra-card{ padding: 24px 26px; }
.extra-card h4{
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 16px;
  font-weight: 500;
}
.extra-card li{
  position: relative;
  padding-left: 20px;
  font-size: 0.9rem;
  color: var(--text-2);
  margin-bottom: 11px;
}
.extra-card li:last-child{ margin-bottom: 0; }
.extra-card li::before{
  content: "";
  position: absolute;
  left: 0; top: 0.55em;
  width: 8px; height: 8px;
  border: 1px solid var(--blue);
  border-radius: 2px;
  transform: rotate(45deg);
}

/* ==========================================================================
   14. CONTACT & FOOTER
   ========================================================================== */
.contact{ text-align: left; }
.contact h2{ font-size: var(--step-4); letter-spacing: -0.042em; line-height: 1; margin-bottom: 22px; max-width: 16ch; }
.contact .lede{ margin-bottom: 38px; }

.contact-grid{ display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; margin-bottom: 34px; }
.contact-card{
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255,255,255,0.015);
  transition: border-color .3s var(--ease), transform .3s var(--ease), background .3s var(--ease);
}
.contact-card:hover{ border-color: rgba(77,139,255,0.4); background: var(--blue-soft); transform: translateY(-3px); }
.contact-card .k{ font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--text-4); }
.contact-card .v{ font-size: 0.92rem; color: var(--text); word-break: break-word; }
.contact-card .go{ margin-top: 6px; font-family: var(--mono); font-size: 0.64rem; color: var(--blue); letter-spacing: 0.08em; }

.site-footer{
  border-top: 1px solid var(--line);
  padding-block: 42px 52px;
}
.footer-inner{
  display: flex;
  flex-wrap: wrap;
  gap: 26px;
  justify-content: space-between;
  align-items: flex-end;
}
.footer-brand .n{ font-size: 1.05rem; font-weight: 600; letter-spacing: -0.025em; margin-bottom: 5px; }
.footer-brand .r{ font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--text-4); }
.footer-links{ display: flex; flex-wrap: wrap; gap: 22px; }
.footer-links a{ font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.08em; color: var(--text-3); transition: color .25s var(--ease); }
.footer-links a:hover{ color: var(--cyan); }
.footer-meta{
  width: 100%;
  padding-top: 26px;
  margin-top: 26px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 12px 26px;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.06em;
  color: var(--text-4);
}

/* ==========================================================================
   15. CURSOR
   ========================================================================== */
.cursor-dot, .cursor-ring{
  position: fixed;
  top: 0; left: 0;
  pointer-events: none;
  z-index: 400;
  border-radius: 50%;
  opacity: 0;
  will-change: transform;
}
.cursor-dot{ width: 5px; height: 5px; background: var(--cyan); margin: -2.5px 0 0 -2.5px; }
.cursor-ring{
  width: 30px; height: 30px;
  margin: -15px 0 0 -15px;
  border: 1px solid rgba(233,238,246,0.35);
  transition: width .28s var(--ease), height .28s var(--ease), margin .28s var(--ease),
              border-color .28s var(--ease), background .28s var(--ease);
}
body.cursor-on .cursor-dot, body.cursor-on .cursor-ring{ opacity: 1; }
body.cursor-hover .cursor-ring{
  width: 48px; height: 48px; margin: -24px 0 0 -24px;
  border-color: rgba(34,211,238,0.6);
  background: rgba(34,211,238,0.07);
}

/* ==========================================================================
   16. MOTION / REVEAL
   ========================================================================== */
.reveal{
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .75s var(--ease), transform .75s var(--ease);
}
.reveal.in{ opacity: 1; transform: none; }
.reveal[data-delay="1"]{ transition-delay: .08s; }
.reveal[data-delay="2"]{ transition-delay: .16s; }
.reveal[data-delay="3"]{ transition-delay: .24s; }
.reveal[data-delay="4"]{ transition-delay: .32s; }

.hero-stagger > *{ opacity: 0; transform: translateY(16px); animation: heroIn .85s var(--ease) forwards; }
.hero-stagger > *:nth-child(1){ animation-delay: .1s; }
.hero-stagger > *:nth-child(2){ animation-delay: .18s; }
.hero-stagger > *:nth-child(3){ animation-delay: .26s; }
.hero-stagger > *:nth-child(4){ animation-delay: .34s; }
.hero-stagger > *:nth-child(5){ animation-delay: .42s; }
.hero-stagger > *:nth-child(6){ animation-delay: .5s; }
.hero-stagger > *:nth-child(7){ animation-delay: .58s; }
.hero-stagger > *:nth-child(8){ animation-delay: .66s; }
@keyframes heroIn{ to{ opacity: 1; transform: none; } }

.draw{ stroke-dasharray: 1; stroke-dashoffset: 1; }

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *, *::before, *::after{
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal{ opacity: 1; transform: none; }
  .hero-stagger > *{ opacity: 1; transform: none; }
  .id-card{ opacity: 1; transform: none; }
  .cursor-dot, .cursor-ring{ display: none; }
}

/* ==========================================================================
   17. RESPONSIVE
   ========================================================================== */
@media (max-width: 1080px){
  .nav-links{ display: none; }
  .nav-toggle{ display: block; }
  .nav-actions .btn{ display: none; }
}

@media (max-width: 1080px){
  .stats-grid{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stat{ padding: 22px 0 24px; }
  .stat:nth-child(odd) + .stat{ padding-left: clamp(16px, 4vw, 30px); }
  .stat:nth-child(3), .stat:nth-child(4){ border-top: 1px solid var(--line); }
  .stat:nth-child(3){ border-left: 0; padding-left: 0; }
}

@media (max-width: 940px){
  .hero{ min-height: auto; padding-top: calc(var(--nav-h) + 48px); padding-bottom: 72px; }
  .hero-grid{ grid-template-columns: 1fr; gap: 40px; }
  .id-card{ max-width: 540px; }
  .id-visual{ aspect-ratio: 16 / 6; }
  .scroll-hint{ display: none; }
  .about-grid{ grid-template-columns: 1fr; }
  .project{ grid-template-columns: 1fr; }
  .project:nth-child(even) .project-body{ order: 0; }
  .project-visual{ order: -1; }
  .tl-item{ grid-template-columns: 1fr; gap: 14px; }
}

@media (max-width: 640px){
  :root{ --nav-h: 62px; }
  .hero-title{ letter-spacing: -0.038em; }
  .id-visual{ aspect-ratio: 16 / 7; }
  .id-row{ grid-template-columns: 1fr; gap: 4px; }
  .stats-grid{ grid-template-columns: 1fr; }
  .stat{ padding: 18px 0; }
  .stat + .stat{ padding-left: 0; border-left: 0; border-top: 1px solid var(--line); }
  .stat-label{ max-width: none; }
  .about-facts{ grid-template-columns: 1fr; }
  .contact h2{ font-size: var(--step-3); }
  .modal-panel{ padding: 22px 18px 30px; max-height: 94svh; }
  .modal-block ul{ grid-template-columns: 1fr; }
  .cmp-row{ grid-template-columns: 1fr; }
  .cmp-meters{ justify-content: flex-start; }
  .arc-strip{ border-radius: var(--radius); }
  .footer-inner{ flex-direction: column; align-items: flex-start; }
}

@media (max-width: 400px){
  .pv{ min-height: 220px; padding: 11px; }
  .skill-card{ padding: 18px; }
  .edu-card{ padding: 20px; }
}

@media (hover: none){
  .cursor-dot, .cursor-ring{ display: none; }
}