/* ─────────────────────────────────────────
   ROOT & RESET
───────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:          #080810;
  --bg-alt:      #0d0d1a;
  --surface:     #11111f;
  --surface-2:   #181828;
  --border:      rgba(255,255,255,.07);
  --border-h:    rgba(255,255,255,.14);

  --text:        #e4e4f0;
  --text-muted:  #8585a8;
  --text-dim:    #55556e;

  --accent:      #7c6fff;
  --accent-2:    #00d4ff;
  --grad:        linear-gradient(135deg, #7c6fff, #00d4ff);
  --grad-subtle: linear-gradient(135deg, rgba(124,111,255,.15), rgba(0,212,255,.08));

  --radius:      12px;
  --radius-lg:   20px;
  --transition:  .25s cubic-bezier(.4,0,.2,1);
  --shadow:      0 4px 24px rgba(0,0,0,.4);
  --shadow-lg:   0 8px 48px rgba(0,0,0,.6);

  --font:        'Inter', system-ui, sans-serif;
  --mono:        'JetBrains Mono', monospace;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
strong { color: #fff; font-weight: 600; }

/* ─────────────────────────────────────────
   SCROLLBAR
───────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--surface-2); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ─────────────────────────────────────────
   TYPOGRAPHY UTILITIES
───────────────────────────────────────── */
.gradient-text {
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ─────────────────────────────────────────
   REVEAL ANIMATION
───────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ─────────────────────────────────────────
   NAV
───────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(1.5rem, 5vw, 5rem);
  height: 64px;
  background: rgba(8, 8, 16, .75);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}
.nav.scrolled {
  border-bottom-color: var(--border);
  background: rgba(8, 8, 16, .95);
}

.nav__logo {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 1.1rem;
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: .05em;
}
.nav__logo-img {
  width: 36px;
  height: 36px;
  object-fit: contain;
  display: block;
}

.nav__links {
  display: flex;
  list-style: none;
  gap: 2rem;
  align-items: center;
}
.nav__links a {
  font-size: .9rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition);
  position: relative;
}
.nav__links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--grad);
  border-radius: 99px;
  transition: width var(--transition);
}
.nav__links a:hover, .nav__links a.active {
  color: var(--text);
}
.nav__links a:hover::after, .nav__links a.active::after { width: 100%; }

.nav__cta {
  padding: .45rem 1.1rem !important;
  border-radius: 8px;
  border: 1px solid var(--border-h) !important;
  color: var(--text) !important;
  transition: background var(--transition), border-color var(--transition) !important;
}
.nav__cta:hover {
  background: var(--surface) !important;
  border-color: var(--accent) !important;
}
.nav__cta::after { display: none !important; }

.nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav__burger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--text);
  border-radius: 99px;
  transition: transform var(--transition), opacity var(--transition);
}
.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); }

/* ─────────────────────────────────────────
   BUTTONS
───────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .75rem 1.75rem;
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), opacity var(--transition);
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--grad);
  color: #fff;
  box-shadow: 0 4px 20px rgba(124,111,255,.3);
}
.btn--primary:hover { box-shadow: 0 6px 28px rgba(124,111,255,.5); }

.btn--ghost {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border-h);
}
.btn--ghost:hover { border-color: var(--accent); background: var(--surface-2); }

.btn--sm { padding: .5rem 1.1rem; font-size: .82rem; }

.arrow { transition: transform var(--transition); }
.btn:hover .arrow { transform: translate(2px,-2px); }

/* ─────────────────────────────────────────
   HERO
───────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: 0 clamp(1.5rem, 8vw, 12rem);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: .45;
}
.orb--1 {
  width: 600px; height: 600px;
  top: -200px; right: -100px;
  background: radial-gradient(circle, #7c6fff55, transparent 70%);
  animation: float 8s ease-in-out infinite;
}
.orb--2 {
  width: 400px; height: 400px;
  bottom: -100px; left: 10%;
  background: radial-gradient(circle, #00d4ff33, transparent 70%);
  animation: float 11s ease-in-out infinite reverse;
}
.orb--3 {
  width: 300px; height: 300px;
  top: 40%; left: 30%;
  background: radial-gradient(circle, #7c6fff22, transparent 70%);
  animation: float 14s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translate(0,0) scale(1); }
  50%       { transform: translate(20px, -30px) scale(1.05); }
}

.hero__content {
  position: relative;
  max-width: 720px;
}

.hero__avatar {
  height: 60px;
  width: auto;
  object-fit: contain;
  margin-bottom: 1.5rem;
}
.hero__pre {
  font-family: var(--mono);
  font-size: .95rem;
  color: var(--accent);
  letter-spacing: .08em;
  margin-bottom: .75rem;
}

.hero__name {
  font-size: clamp(3rem, 8vw, 6.5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -.02em;
  background: linear-gradient(135deg, #fff 40%, #a8a0ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1.25rem;
}

.hero__sub {
  font-size: clamp(.95rem, 2vw, 1.15rem);
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: .02em;
  margin-bottom: 1.25rem;
}

.hero__bio {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 540px;
  margin-bottom: 2.25rem;
  line-height: 1.8;
}

.hero__actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero__scroll {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .4rem;
}
.hero__scroll span {
  display: block;
  width: 2px;
  height: 48px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  border-radius: 99px;
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: .3; transform: scaleY(.8); }
  50%       { opacity: 1;  transform: scaleY(1); }
}

/* ─────────────────────────────────────────
   SECTIONS
───────────────────────────────────────── */
.section {
  padding: clamp(4rem, 8vw, 8rem) 0;
}
.section--alt {
  background: var(--bg-alt);
}

.container {
  width: min(1200px, 100% - 3rem);
  margin: 0 auto;
}

.section__title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -.02em;
  margin-bottom: clamp(2rem, 5vw, 4rem);
  position: relative;
  display: inline-block;
}
.section__title::after {
  content: '';
  position: absolute;
  bottom: -10px; left: 0;
  width: 48px; height: 3px;
  background: var(--grad);
  border-radius: 99px;
}

/* ─────────────────────────────────────────
   ABOUT
───────────────────────────────────────── */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about__text p {
  color: var(--text-muted);
  margin-bottom: 1rem;
  font-size: 1.02rem;
  line-height: 1.85;
}
.about__text p:last-child { margin-bottom: 0; }

.about__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: .35rem;
  transition: border-color var(--transition), transform var(--transition);
}
.stat:hover { border-color: var(--accent); transform: translateY(-3px); }

.stat__num {
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1;
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat__label {
  font-size: .8rem;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: .06em;
}

/* ─────────────────────────────────────────
   SKILLS
───────────────────────────────────────── */
.skills__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.skill-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}
.skill-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--grad-subtle);
  opacity: 0;
  transition: opacity var(--transition);
}
.skill-card:hover {
  border-color: var(--border-h);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.skill-card:hover::before { opacity: 1; }

.skill-card__icon {
  font-size: 1.4rem;
  margin-bottom: .75rem;
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
}

.skill-card h3 {
  font-size: .95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-muted);
  margin-bottom: 1rem;
  position: relative;
}

/* ─────────────────────────────────────────
   TAGS
───────────────────────────────────────── */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  position: relative;
}

.tag {
  display: inline-block;
  padding: .3rem .75rem;
  border-radius: 999px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  font-size: .78rem;
  font-weight: 500;
  color: var(--text-muted);
  font-family: var(--mono);
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}
.tag:hover {
  background: rgba(124,111,255,.15);
  border-color: rgba(124,111,255,.4);
  color: #c4bcff;
}

/* ─────────────────────────────────────────
   PROJECTS
───────────────────────────────────────── */
.projects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}
.project-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--grad-subtle);
  opacity: 0;
  transition: opacity var(--transition);
}
.project-card:hover {
  border-color: var(--border-h);
  transform: translateY(-5px);
  box-shadow: var(--shadow);
}
.project-card:hover::before { opacity: 1; }

.project-card--featured {
  grid-column: 1 / -1;
  border-color: rgba(124,111,255,.3);
  background: linear-gradient(135deg, var(--surface), rgba(124,111,255,.05));
}
.project-card--featured:hover {
  border-color: rgba(124,111,255,.6);
  box-shadow: 0 8px 40px rgba(124,111,255,.2);
}

.project-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .75rem;
  flex-wrap: wrap;
  position: relative;
}

.project-card__date {
  font-size: .78rem;
  color: var(--text-dim);
  font-family: var(--mono);
}

.project-card__badges {
  display: flex;
  gap: .5rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  padding: .25rem .7rem;
  border-radius: 999px;
  font-size: .72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
}
.badge--live    { background: rgba(0,212,100,.12); color: #00d46a; border: 1px solid rgba(0,212,100,.25); }
.badge--featured{ background: rgba(124,111,255,.15); color: #a89fff; border: 1px solid rgba(124,111,255,.3); }
.badge--ongoing { background: rgba(0,180,255,.12); color: #00b4ff; border: 1px solid rgba(0,180,255,.25); }

.project-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -.01em;
  position: relative;
}
.project-card--featured h3 { font-size: 1.6rem; }

.project-card p {
  color: var(--text-muted);
  font-size: .94rem;
  line-height: 1.75;
  flex: 1;
  position: relative;
}

.project-card__links {
  display: flex;
  gap: .75rem;
  flex-wrap: wrap;
  position: relative;
  margin-top: .25rem;
}

/* ─────────────────────────────────────────
   EDUCATION TIMELINE
───────────────────────────────────────── */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 760px;
}

.timeline__item {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 0 1.5rem;
}

.timeline__marker {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.timeline__dot {
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--grad);
  flex-shrink: 0;
  margin-top: .45rem;
  box-shadow: 0 0 0 4px rgba(124,111,255,.2);
}

.timeline__line {
  width: 2px;
  flex: 1;
  background: linear-gradient(to bottom, rgba(124,111,255,.4), rgba(124,111,255,.05));
  margin: .5rem 0;
  min-height: 40px;
}

.timeline__body {
  padding-bottom: 2.75rem;
}

.timeline__date {
  display: inline-block;
  font-family: var(--mono);
  font-size: .78rem;
  color: var(--accent);
  margin-bottom: .5rem;
  letter-spacing: .04em;
}

.timeline__body h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: .35rem;
}

.timeline__school {
  color: var(--accent-2);
  font-size: .88rem;
  font-weight: 500;
  margin-bottom: .4rem;
}

.timeline__body p {
  color: var(--text-muted);
  font-size: .94rem;
  line-height: 1.7;
  margin-bottom: .25rem;
}

.timeline__extra {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  margin-top: .5rem;
  padding: .3rem .9rem;
  border-radius: 999px;
  background: rgba(124,111,255,.1);
  border: 1px solid rgba(124,111,255,.25);
  color: #a89fff !important;
  font-size: .82rem !important;
  font-weight: 500;
}
.timeline__list {
  margin: .6rem 0 0 1.1rem;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: .35rem;
  font-size: .9rem;
  color: var(--text-dim);
}
.timeline__list li::marker { color: var(--accent); }

/* ─────────────────────────────────────────
   CONTACT
───────────────────────────────────────── */
.contact__sub {
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  font-size: 1.05rem;
}

.contact__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.25rem;
}

.contact-card {
  display: flex;
  flex-direction: column;
  gap: .4rem;
  padding: 1.75rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  cursor: pointer;
}
.contact-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(124,111,255,.15);
}

.contact-card__icon {
  font-size: 1.5rem;
  margin-bottom: .25rem;
}

.contact-card__label {
  font-size: .75rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--text-dim);
  font-weight: 600;
}

.contact-card__value {
  font-size: .95rem;
  font-weight: 500;
  color: var(--text);
  word-break: break-all;
}

/* ─────────────────────────────────────────
   FOOTER
───────────────────────────────────────── */
.footer {
  padding: 2rem clamp(1.5rem, 5vw, 5rem);
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: .85rem;
  color: var(--text-dim);
}
.footer a {
  color: var(--accent);
  transition: color var(--transition);
}
.footer a:hover { color: var(--accent-2); }
.footer-ai {
  margin-top: .4rem;
  font-size: .75rem;
  opacity: .55;
}

/* ─────────────────────────────────────────
   RESPONSIVE
───────────────────────────────────────── */
@media (max-width: 900px) {
  .about__grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .about__stats {
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
  }
  .project-card--featured {
    grid-column: auto;
  }
}

@media (max-width: 640px) {
  /* ── Mobile menu panel ── */
  .nav__links {
    position: fixed;
    top: 64px; left: 0; right: 0;
    z-index: 100;
    background: rgba(10, 10, 20, .98);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    flex-direction: column;
    gap: 0;
    padding: 0 0 1.25rem;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 16px 48px rgba(0, 0, 0, .5);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity .28s ease, visibility .28s ease, transform .28s ease;
    pointer-events: none;
  }
  .nav__links.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: all;
  }

  /* ── Menu items ── */
  .nav__links li {
    width: 100%;
    border-bottom: 1px solid var(--border);
  }
  .nav__links li:last-child { border-bottom: none; }

  .nav__links a {
    display: flex;
    align-items: center;
    padding: 1rem 1.5rem;
    font-size: .98rem;
    font-weight: 500;
    color: var(--text-muted);
    transition: background var(--transition), color var(--transition), padding-left var(--transition);
  }
  .nav__links a:hover {
    background: rgba(124, 111, 255, .08);
    color: var(--text);
    padding-left: 2rem;
  }
  .nav__links a::after { display: none; }

  /* ── Contact CTA button (full width at bottom) ── */
  .nav__cta {
    display: block !important;
    margin: 1rem 1.5rem 0 !important;
    padding: .85rem 1.5rem !important;
    text-align: center !important;
    border-radius: var(--radius) !important;
    background: var(--grad) !important;
    color: #fff !important;
    border: none !important;
    font-weight: 600 !important;
    font-size: .95rem !important;
    box-shadow: 0 4px 20px rgba(124, 111, 255, .3);
    transition: opacity var(--transition), transform var(--transition) !important;
  }
  .nav__cta:hover {
    opacity: .88 !important;
    transform: translateY(-1px) !important;
    background: var(--grad) !important;
  }

  /* ── Backdrop ── */
  .nav__backdrop {
    position: fixed;
    inset: 0;
    top: 64px;
    z-index: 99;
    background: rgba(0, 0, 0, .55);
    opacity: 0;
    visibility: hidden;
    transition: opacity .32s ease, visibility .32s ease;
  }
  .nav__backdrop.open {
    opacity: 1;
    visibility: visible;
  }

  .nav__burger { display: flex; }

  /* ── Rest of mobile layout ── */
  .hero { padding: 0 1.5rem; }
  .hero__actions { flex-direction: column; }
  .btn { justify-content: center; }

  .about__stats { grid-template-columns: 1fr 1fr; }

  .skills__grid,
  .projects__grid,
  .contact__grid {
    grid-template-columns: 1fr;
  }

  .timeline__item { grid-template-columns: 24px 1fr; gap: 0 1rem; }
}