/* =====================================================
   DHIMANT SUTHAR — PORTFOLIO
   Deep-space dark · cyan→violet gradient accents
===================================================== */
:root {
  --bg:        #05060f;
  --bg-soft:   #0a0c1a;
  --surface:   rgba(255, 255, 255, 0.04);
  --surface-2: rgba(255, 255, 255, 0.07);
  --border:    rgba(255, 255, 255, 0.09);
  --text:      #d7dae6;
  --muted:     #8a8fa8;
  --heading:   #ffffff;
  --cyan:      #22d3ee;
  --violet:    #8b5cf6;
  --grad:      linear-gradient(100deg, var(--cyan), var(--violet));
  --radius:    18px;
  --font-head: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --maxw:      1120px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { font-family: var(--font-head); color: var(--heading); line-height: 1.15; }
a { color: var(--cyan); text-decoration: none; }
img { max-width: 100%; display: block; }
::selection { background: rgba(139, 92, 246, 0.45); color: #fff; }

.grad {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ============ 3D CANVAS ============ */
#bg-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

/* ============ NAV ============ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px clamp(20px, 5vw, 56px);
  transition: background 0.35s, backdrop-filter 0.35s, padding 0.35s, border-color 0.35s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(5, 6, 15, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--border);
  padding-top: 12px;
  padding-bottom: 12px;
}
.nav__logo {
  font-family: var(--font-head);
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--heading);
  letter-spacing: 0.02em;
}
.nav__logo span { color: var(--cyan); }
.nav__links { display: flex; align-items: center; gap: 6px; }
.nav__links a {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 10px;
  transition: color 0.2s, background 0.2s;
}
.nav__links a:hover { color: #fff; background: var(--surface-2); }
.nav__links a.active { color: var(--cyan); }
.nav__links a.nav__cta {
  margin-left: 10px;
  color: #04121a;
  background: var(--grad);
  font-weight: 600;
}
.nav__links a.nav__cta:hover { filter: brightness(1.15); color: #04121a; }
.nav__burger { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav__burger span {
  display: block; width: 24px; height: 2px; margin: 5px 0;
  background: var(--heading); border-radius: 2px; transition: transform 0.3s, opacity 0.3s;
}

/* ============ HERO ============ */
.hero {
  position: relative;
  z-index: 1;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: 120px clamp(20px, 5vw, 56px) 60px;
}
.hero__inner { max-width: var(--maxw); margin: 0 auto; width: 100%; }
.hero__eyebrow {
  font-size: 0.95rem;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 18px;
}
.hero__eyebrow strong { color: #76b900; font-weight: 600; }
.hero__title {
  font-size: clamp(3.2rem, 10vw, 6.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}
.hero__typed {
  font-family: var(--font-head);
  font-size: clamp(1.05rem, 2.6vw, 1.5rem);
  color: var(--cyan);
  min-height: 2.2em;
  margin-bottom: 18px;
}
.caret {
  display: inline-block;
  width: 2px; height: 1.1em;
  background: var(--cyan);
  margin-left: 3px;
  vertical-align: text-bottom;
  animation: blink 1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }
.hero__blurb { max-width: 560px; color: var(--muted); margin-bottom: 34px; }
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 30px; }

.btn {
  display: inline-block;
  padding: 13px 28px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.95rem;
  font-family: var(--font-head);
  transition: transform 0.2s, box-shadow 0.2s, filter 0.2s, background 0.2s;
}
.btn--solid {
  background: var(--grad);
  color: #04121a;
  box-shadow: 0 8px 28px rgba(34, 211, 238, 0.25);
}
.btn--solid:hover { transform: translateY(-2px); filter: brightness(1.12); box-shadow: 0 12px 34px rgba(139, 92, 246, 0.35); }
.btn--ghost {
  border: 1px solid var(--border);
  color: var(--text);
  background: var(--surface);
}
.btn--ghost:hover { transform: translateY(-2px); background: var(--surface-2); color: #fff; }
.btn--sm { padding: 10px 20px; font-size: 0.88rem; }

.hero__social { display: flex; gap: 10px; }
.hero__social a {
  width: 42px; height: 42px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--muted);
  background: var(--surface);
  transition: all 0.25s;
}
.hero__social a:hover { color: #04121a; background: var(--grad); border-color: transparent; transform: translateY(-3px); }

.hero__scroll {
  position: absolute;
  bottom: 26px; left: 50%;
  transform: translateX(-50%);
  width: 26px; height: 42px;
  border: 2px solid var(--muted);
  border-radius: 14px;
}
.hero__scroll span {
  position: absolute;
  top: 7px; left: 50%;
  width: 4px; height: 8px;
  margin-left: -2px;
  background: var(--cyan);
  border-radius: 2px;
  animation: scrollhint 1.8s ease-in-out infinite;
}
@keyframes scrollhint {
  0%   { transform: translateY(0);    opacity: 1; }
  70%  { transform: translateY(14px); opacity: 0; }
  100% { transform: translateY(0);    opacity: 0; }
}

/* ============ SECTIONS ============ */
main { position: relative; z-index: 1; }
.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(70px, 10vw, 130px) clamp(20px, 5vw, 56px);
}
.section__head { margin-bottom: clamp(40px, 6vw, 70px); }
.section__kicker {
  display: inline-block;
  font-family: var(--font-head);
  font-size: 0.82rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
  border: 1px solid rgba(34, 211, 238, 0.3);
  background: rgba(34, 211, 238, 0.06);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
}
.section__head h2 {
  font-size: clamp(2rem, 5.2vw, 3.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* ============ ABOUT ============ */
.about {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: clamp(36px, 6vw, 70px);
  align-items: start;
}
.about__photo { position: relative; }
.about__photo-frame {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  position: relative;
}
.about__photo-frame::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(200deg, rgba(34,211,238,0.16), transparent 45%, rgba(139,92,246,0.2));
  pointer-events: none;
}
.about__photo-frame img { aspect-ratio: 4/5; object-fit: cover; width: 100%; }
.about__badge {
  position: absolute;
  bottom: -18px; right: -14px;
  background: var(--grad);
  color: #04121a;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.5rem;
  line-height: 1.1;
  padding: 14px 20px;
  border-radius: 14px;
  box-shadow: 0 14px 40px rgba(34, 211, 238, 0.35);
  text-align: center;
}
.about__badge small { display: block; font-size: 0.66rem; font-weight: 600; letter-spacing: 0.04em; }
.about__text p { margin-bottom: 18px; color: var(--muted); font-size: 1.04rem; }
.about__text strong { color: var(--text); }

.about__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 14px;
  margin-top: 30px;
}
.stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px 16px;
}
.stat__num {
  display: block;
  font-family: var(--font-head);
  font-size: 1.9rem;
  font-weight: 700;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.stat__label { font-size: 0.82rem; color: var(--muted); }

/* ============ TIMELINE ============ */
.timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 34px;
  padding-left: 26px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 5px; top: 8px; bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan), var(--violet));
  opacity: 0.35;
}
.tl-item { position: relative; }
.tl-item::before {
  content: '';
  position: absolute;
  left: -26px; top: 8px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--grad);
  box-shadow: 0 0 0 5px rgba(34, 211, 238, 0.12), 0 0 18px rgba(34, 211, 238, 0.5);
}
.tl-item__meta {
  display: flex;
  gap: 14px;
  align-items: baseline;
  margin-bottom: 10px;
  font-family: var(--font-head);
}
.tl-item__dates { color: var(--cyan); font-size: 0.9rem; font-weight: 600; letter-spacing: 0.04em; }
.tl-item__loc { color: var(--muted); font-size: 0.82rem; }
.tl-item__card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 28px;
  transition: border-color 0.3s, background 0.3s;
}
.tl-item__card:hover { border-color: rgba(34, 211, 238, 0.35); background: var(--surface-2); }
.tl-item__card h3 { font-size: 1.18rem; margin-bottom: 12px; }
.tl-item__co {
  display: inline-block;
  margin-left: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--violet);
  background: rgba(139, 92, 246, 0.12);
  border: 1px solid rgba(139, 92, 246, 0.3);
  padding: 3px 10px;
  border-radius: 999px;
  vertical-align: middle;
}
.tl-item__card ul { list-style: none; }
.tl-item__card li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 7px;
  color: var(--muted);
  font-size: 0.95rem;
}
.tl-item__card li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--cyan);
}

/* ============ SKILLS ============ */
.skills {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 18px;
}
.skill-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  transition: border-color 0.3s;
}
.skill-card:hover { border-color: rgba(139, 92, 246, 0.4); }
.skill-card h3 { font-size: 1.05rem; margin-bottom: 16px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips span {
  font-size: 0.8rem;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border);
  padding: 5px 12px;
  border-radius: 999px;
  transition: all 0.2s;
}
.chips span:hover { border-color: var(--cyan); color: var(--cyan); transform: translateY(-1px); }
.chips--sm span { font-size: 0.74rem; padding: 4px 10px; }

.creds {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
  margin-top: 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}
.creds__col h4 {
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 12px;
}
.creds__col ul { list-style: none; }
.creds__col li { color: var(--muted); font-size: 0.92rem; margin-bottom: 6px; }

/* ============ PROJECTS ============ */
.feature {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: clamp(26px, 4vw, 50px);
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: clamp(22px, 3.5vw, 44px);
  margin-bottom: 40px;
  position: relative;
  overflow: hidden;
}
.feature::before {
  content: '';
  position: absolute;
  top: -120px; right: -120px;
  width: 320px; height: 320px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.22), transparent 65%);
  pointer-events: none;
}
.feature__media {
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
}
.feature__tag {
  display: inline-block;
  font-family: var(--font-head);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #6ee7b7;
  background: rgba(110, 231, 183, 0.08);
  border: 1px solid rgba(110, 231, 183, 0.3);
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 14px;
}
.feature__body h3 { font-size: clamp(1.5rem, 3vw, 2rem); margin-bottom: 12px; }
.feature__body > p { color: var(--muted); font-size: 0.98rem; margin-bottom: 16px; }
.feature__body .chips { margin-bottom: 22px; }
.feature__links { display: flex; gap: 12px; flex-wrap: wrap; }
.feature__note { font-size: 0.78rem; color: var(--muted); margin-top: 14px; }

.proj-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 18px;
}
.proj-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color 0.3s, background 0.3s;
}
.proj-card:hover { border-color: rgba(34, 211, 238, 0.4); background: var(--surface-2); }
.proj-card__icon { font-size: 1.9rem; margin-bottom: 14px; }
.proj-card h3 { font-size: 1.12rem; margin-bottom: 10px; }
.proj-card p { color: var(--muted); font-size: 0.92rem; margin-bottom: 16px; }

/* ============ GALLERY ============ */
.gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.gallery__item {
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border);
  position: relative;
}
.gallery__item img {
  aspect-ratio: 3/4;
  object-fit: cover;
  width: 100%;
  transition: transform 0.5s ease;
}
.gallery__item:hover img { transform: scale(1.06); }
.gallery__item::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(5, 6, 15, 0.55));
  pointer-events: none;
}

/* ============ CONTACT ============ */
.section--contact { text-align: center; }
.section--contact .section__head h2 { margin-inline: auto; }
.contact__blurb { max-width: 540px; margin: 0 auto 44px; color: var(--muted); }
.contact__cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 16px;
  text-align: left;
}
.contact-card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color 0.3s, background 0.3s, transform 0.2s;
}
a.contact-card:hover { border-color: rgba(34, 211, 238, 0.45); background: var(--surface-2); transform: translateY(-3px); }
.contact-card__label {
  display: block;
  font-family: var(--font-head);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 8px;
}
.contact-card__value { color: var(--text); font-size: 0.95rem; word-break: break-word; }

/* ============ FOOTER ============ */
.footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 34px 20px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.85rem;
}

/* ============ REVEAL ANIMATIONS ============ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* tilt targets */
.tilt { transform-style: preserve-3d; will-change: transform; }

/* ============ RESPONSIVE ============ */
@media (max-width: 900px) {
  .about { grid-template-columns: 1fr; }
  .about__photo { max-width: 320px; }
  .feature { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .nav__links {
    position: fixed;
    top: 0; right: 0;
    height: 100vh;
    width: min(78vw, 320px);
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 8px;
    padding: 40px 30px;
    background: rgba(8, 10, 22, 0.97);
    backdrop-filter: blur(20px);
    border-left: 1px solid var(--border);
    transform: translateX(100%);
    transition: transform 0.35s ease;
  }
  .nav__links.open { transform: translateX(0); }
  .nav__links a { font-size: 1.1rem; width: 100%; }
  .nav__burger { display: block; position: relative; z-index: 110; }
  .nav__burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav__burger.open span:nth-child(2) { opacity: 0; }
  .nav__burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .caret, .hero__scroll span { animation: none; }
}