:root {
  --bg: #050914;
  --bg-2: #07101f;
  --panel: rgba(13, 23, 42, 0.74);
  --panel-strong: rgba(12, 21, 38, 0.95);
  --card: rgba(14, 24, 43, 0.82);
  --card-hover: rgba(18, 32, 57, 0.95);
  --border: rgba(148, 163, 184, 0.16);
  --border-strong: rgba(59, 130, 246, 0.45);
  --text: #f8fafc;
  --muted: #94a3b8;
  --muted-strong: #cbd5e1;
  --accent: #3b82f6;
  --accent-light: #60a5fa;
  --cyan: #22d3ee;
  --green: #10b981;
  --purple: #a855f7;
  --shadow: 0 30px 90px rgba(0, 0, 0, 0.42);
  --radius: 22px;
  --sidebar-width: 232px;
}

[data-theme="light"] {
  --bg: #f5f7fb;
  --bg-2: #eef4ff;
  --panel: rgba(255, 255, 255, 0.86);
  --panel-strong: rgba(255, 255, 255, 0.98);
  --card: rgba(255, 255, 255, 0.9);
  --card-hover: rgba(248, 250, 252, 0.96);
  --border: rgba(15, 23, 42, 0.12);
  --border-strong: rgba(37, 99, 235, 0.35);
  --text: #0f172a;
  --muted: #64748b;
  --muted-strong: #334155;
  --shadow: 0 30px 90px rgba(15, 23, 42, 0.12);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  min-height: 100vh;
  background:
    radial-gradient(circle at 14% 18%, rgba(37, 99, 235, 0.18), transparent 34rem),
    radial-gradient(circle at 85% 20%, rgba(34, 211, 238, 0.11), transparent 32rem),
    radial-gradient(circle at 70% 90%, rgba(14, 165, 233, 0.10), transparent 34rem),
    linear-gradient(180deg, var(--bg), #020617 70%);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }

.background-grid {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 0;
  opacity: 0.12;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.18) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.18) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: linear-gradient(to bottom, black, transparent 78%);
}
.background-glow { pointer-events: none; position: fixed; z-index: 0; border-radius: 999px; filter: blur(70px); opacity: .55; }
.background-glow-one { width: 330px; height: 330px; left: 260px; top: 40px; background: rgba(37, 99, 235, .16); }
.background-glow-two { width: 300px; height: 300px; right: 60px; bottom: 60px; background: rgba(34, 211, 238, .11); }

svg { width: 1em; height: 1em; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 20;
  width: var(--sidebar-width);
  display: flex;
  flex-direction: column;
  padding: 28px 20px;
  border-right: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(13, 23, 42, 0.96), rgba(7, 16, 31, 0.96));
  backdrop-filter: blur(18px);
}

.brand { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; margin-bottom: 56px; }
.brand-name { display: block; font-size: 1.35rem; font-weight: 800; letter-spacing: -0.04em; }
.brand-role { display: block; margin-top: 2px; color: var(--muted-strong); font-size: 0.78rem; }
.brand-dot { width: 12px; height: 12px; margin-top: 8px; border-radius: 999px; background: var(--accent); box-shadow: 0 0 18px var(--accent); }

.section-nav { display: grid; gap: 8px; }
.section-nav p { margin: 0 0 12px 2px; color: var(--muted); font-size: 0.76rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.12em; }
.section-nav a {
  display: flex;
  align-items: center;
  gap: 11px;
  min-height: 42px;
  padding: 0 12px;
  border-radius: 10px;
  color: var(--muted-strong);
  font-size: 0.9rem;
  font-weight: 600;
  transition: 0.2s ease;
}
.section-nav a:hover,
.section-nav a.active {
  color: white;
  background: linear-gradient(135deg, rgba(37, 99, 235, .82), rgba(29, 78, 216, .64));
  box-shadow: inset 0 0 0 1px rgba(96, 165, 250, 0.25), 0 10px 28px rgba(37, 99, 235, 0.18);
}
.nav-icon { display: inline-flex; font-size: 17px; }

.sidebar-footer { margin-top: auto; display: grid; gap: 16px; }
.sidebar-links.vertical { display: grid; gap: 8px; }
.sidebar-links.vertical a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--muted-strong);
  background: rgba(15, 23, 42, 0.34);
  font-size: 0.82rem;
  font-weight: 600;
}
.sidebar-links.vertical a:hover { color: var(--text); border-color: var(--border-strong); background: rgba(37, 99, 235, 0.12); }
.footer-icon { display: inline-flex; font-size: 17px; color: var(--accent-light); }
.theme-select {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: fit-content;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--muted-strong);
  background: rgba(15, 23, 42, 0.38);
  cursor: pointer;
}

.shell {
  position: relative;
  z-index: 1;
  width: min(1040px, calc(100% - var(--sidebar-width)));
  margin-left: var(--sidebar-width);
  padding: 78px 32px 20px;
}

.section { scroll-margin-top: 36px; padding: 34px 0; }
.hero-section { min-height: auto; padding-top: 0; padding-bottom: 56px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: 54px; align-items: center; }
.hero-hi { color: var(--accent); font-weight: 800; font-size: clamp(1.35rem, 2.2vw, 1.75rem); margin-bottom: 6px; }
h1 { font-size: clamp(4.2rem, 8vw, 5.8rem); line-height: .92; letter-spacing: -0.075em; font-weight: 900; }
.typing-cursor { display: inline-block; width: 4px; height: .82em; margin-left: 8px; transform: translateY(7px); background: #64748b; animation: blink 1s infinite; }
@keyframes blink { 0%, 45% { opacity: 1; } 46%, 100% { opacity: 0; } }
.role-pill {
  display: inline-flex;
  margin-top: 18px;
  padding: 7px 13px;
  border-radius: 9px;
  border: 1px solid var(--border-strong);
  color: #dbeafe;
  background: rgba(37, 99, 235, 0.08);
  font-size: 0.86rem;
}
.lead { margin-top: 28px; max-width: 620px; color: var(--muted-strong); font-size: 1.04rem; line-height: 1.9; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 30px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 52px;
  padding: 0 22px;
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  background: rgba(15, 23, 42, 0.62);
  font-size: .9rem;
  font-weight: 800;
  transition: .2s ease;
}
.button.primary { border-color: transparent; background: linear-gradient(135deg, #2f8cff, #1d4ed8); color: #fff; box-shadow: 0 16px 36px rgba(37, 99, 235, 0.28); }
.button:hover { transform: translateY(-2px); border-color: var(--border-strong); }
.quick-stack { display: flex; flex-wrap: wrap; gap: 11px; margin-top: 28px; }
.quick-stack span {
  color: var(--muted-strong);
  border: 1px solid var(--border);
  background: rgba(15, 23, 42, 0.58);
  border-radius: 10px;
  padding: 8px 13px;
  font-size: 0.84rem;
}
.quick-stack span:nth-child(-n+3) { color: #dbeafe; }

.profile-card {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(96, 165, 250, 0.25);
  border-radius: 18px;
  padding: 22px;
  background: linear-gradient(155deg, rgba(30, 64, 125, .72), rgba(15, 23, 42, .92) 42%, rgba(15, 23, 42, .96));
  box-shadow: var(--shadow);
}
.profile-card::before { content: ""; position: absolute; inset: -60px -60px auto auto; width: 170px; height: 170px; border-radius: 999px; background: rgba(34, 211, 238, 0.16); filter: blur(42px); }
.online-dot { position: absolute; top: 24px; right: 24px; width: 18px; height: 18px; border-radius: 999px; background: #10d884; box-shadow: 0 0 28px rgba(16, 216, 132, .9); z-index: 3; }
.profile-image-wrap { position: relative; width: 260px; max-width: 100%; aspect-ratio: 1; margin: 0 auto; border-radius: 999px; overflow: hidden; border: 0; background: rgba(255, 255, 255, 0.92); }
.profile-image-wrap img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(1); }
.profile-meta { margin-top: 28px; }
.profile-meta h2 { font-size: 1.45rem; letter-spacing: -0.04em; }
.profile-meta p { margin-top: 4px; color: var(--muted-strong); font-size: .9rem; }
.focus-area { margin-top: 24px; padding: 16px; border: 1px solid rgba(96, 165, 250, 0.22); border-radius: 10px; background: rgba(2, 6, 23, 0.26); }
.focus-area p { color: var(--muted); text-transform: uppercase; letter-spacing: .13em; font-size: .75rem; font-weight: 800; margin-bottom: 12px; }
.focus-area div { color: var(--cyan); font-size: .82rem; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-weight: 800; line-height: 1.8; }

.section-heading { display: flex; align-items: center; gap: 14px; margin-bottom: 20px; }
.section-heading-row { justify-content: space-between; }
.heading-left { display: flex; align-items: center; gap: 14px; }
.heading-icon { width: 42px; height: 42px; display: grid; place-items: center; flex: 0 0 auto; border: 1px solid rgba(96, 165, 250, 0.22); border-radius: 12px; color: var(--accent); background: rgba(37, 99, 235, 0.12); font-size: 20px; }
.section-heading h2 { font-size: clamp(2rem, 3.8vw, 2.75rem); line-height: 1; letter-spacing: -0.055em; font-weight: 850; }
.small-button { display: inline-flex; align-items: center; gap: 8px; padding: 11px 16px; border-radius: 10px; border: 1px solid var(--border); background: rgba(15, 23, 42, .42); color: var(--muted-strong); font-size: .82rem; font-weight: 800; }
.small-button:hover { color: var(--text); border-color: var(--border-strong); }

.about-grid { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(280px, .95fr); gap: 18px; }
.content-card,
.project-card,
.skill-card,
.timeline-card,
.education-card,
.contact-card {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.76), rgba(11, 19, 34, 0.86));
  backdrop-filter: blur(18px);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.18);
  transition: transform .22s ease, border-color .22s ease, background .22s ease;
}
.content-card:hover,
.project-card:hover,
.skill-card:hover,
.timeline-card:hover,
.education-card:hover,
.contact-card:hover { transform: translateY(-3px); border-color: var(--border-strong); background: var(--card-hover); }
.content-card { padding: 26px; }
.about-card { padding: 30px; }
.content-card p { color: var(--muted-strong); margin-bottom: 16px; font-size: .92rem; line-height: 1.85; }
.content-card p:last-child { margin-bottom: 0; }
.style-card h3 { font-size: 1.1rem; margin-bottom: 20px; }
.clean-list { list-style: none; display: grid; gap: 11px; color: var(--muted-strong); font-size: .9rem; }
.clean-list li { display: flex; align-items: center; gap: 9px; }
.clean-list li::before { content: "✓"; display: inline-grid; place-items: center; width: 16px; height: 16px; border-radius: 999px; background: #2563eb; color: white; font-size: 11px; font-weight: 900; box-shadow: 0 0 12px rgba(37, 99, 235, .45); }

.project-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.project-card { min-height: 340px; padding: 24px; display: flex; flex-direction: column; }
.project-icon { width: 58px; height: 58px; display: grid; place-items: center; border-radius: 12px; color: white; font-size: 25px; margin-bottom: 18px; }
.project-icon.green { background: linear-gradient(135deg, #10b981, #059669); box-shadow: 0 16px 36px rgba(16, 185, 129, .22); }
.project-icon.blue { background: linear-gradient(135deg, #3b82f6, #1d4ed8); box-shadow: 0 16px 36px rgba(59, 130, 246, .22); }
.project-icon.purple { background: linear-gradient(135deg, #a855f7, #7e22ce); box-shadow: 0 16px 36px rgba(168, 85, 247, .22); }
.project-type { text-transform: uppercase; letter-spacing: .12em; font-size: .72rem; font-weight: 900; margin-bottom: 7px; }
.green-text { color: #34d399; }
.blue-text { color: #60a5fa; }
.purple-text { color: #c084fc; }
.project-card h3 { font-size: 1.45rem; letter-spacing: -0.05em; margin-bottom: 14px; }
.project-card p:not(.project-type) { color: var(--muted-strong); font-size: .91rem; line-height: 1.75; }
.project-details { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.project-details span,
.timeline-tags span { color: var(--muted-strong); border: 1px solid var(--border); background: rgba(15, 23, 42, 0.58); border-radius: 999px; padding: 6px 9px; font-size: 0.72rem; font-weight: 700; }
.project-tech-icons { display: flex; align-items: center; gap: 16px; margin-top: auto; padding-top: 26px; }
.project-tech-icons img { width: 28px; height: 28px; object-fit: contain; filter: drop-shadow(0 5px 12px rgba(0,0,0,.22)); }

.skills-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.skill-card { padding: 20px; }
.skill-card h3 { font-size: 1rem; margin-bottom: 18px; }
.skill-logo-row { display: flex; flex-wrap: wrap; align-items: end; gap: 17px; }
.skill-logo { width: 54px; display: grid; justify-items: center; gap: 7px; }
.skill-logo img { width: 34px; height: 34px; object-fit: contain; filter: drop-shadow(0 7px 14px rgba(0, 0, 0, .28)); transition: transform .2s ease; }
.skill-logo:hover img { transform: translateY(-3px) scale(1.06); }
.skill-logo span { color: var(--muted-strong); font-size: .64rem; text-align: center; line-height: 1.1; }

.timeline { position: relative; display: grid; gap: 14px; }
.timeline::before { content: ""; position: absolute; left: 18px; top: 28px; bottom: 28px; width: 1px; background: rgba(96, 165, 250, 0.35); }
.timeline-item { display: grid; grid-template-columns: 170px minmax(0, 1fr); gap: 18px; align-items: start; }
.timeline-date { position: relative; display: flex; align-items: center; gap: 14px; padding-top: 22px; color: var(--accent-light); font-weight: 900; font-size: .95rem; }
.timeline-date span { width: 14px; height: 14px; border-radius: 999px; background: #3b82f6; box-shadow: 0 0 0 6px rgba(37, 99, 235, .15), 0 0 22px rgba(37, 99, 235, .7); z-index: 2; }
.timeline-card { padding: 21px 24px; }
.timeline-card h3 { font-size: 1.06rem; margin-bottom: 10px; }
.timeline-card h3 span { color: var(--muted); margin: 0 6px; }
.timeline-card p { color: var(--muted-strong); font-size: .9rem; line-height: 1.7; }
.timeline-tags { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 14px; }

.education-card { display: flex; align-items: center; gap: 20px; padding: 22px; }
.education-icon { width: 58px; height: 58px; display: grid; place-items: center; border-radius: 12px; color: #bfdbfe; background: rgba(59, 130, 246, .13); border: 1px solid rgba(96, 165, 250, .2); font-size: 30px; }
.education-card h3 { font-size: 1.15rem; }
.education-card p { margin-top: 6px; color: var(--muted-strong); }
.education-card p span { color: var(--muted); margin: 0 6px; }

.contact-card { padding: 24px; }
.contact-card > p { color: var(--muted-strong); font-size: .9rem; margin-bottom: 20px; }
.contact-row { display: grid; grid-template-columns: 1fr 1.15fr 1.55fr 170px; gap: 12px; align-items: stretch; }
.contact-link { display: grid; grid-template-columns: 30px 1fr; column-gap: 10px; align-items: center; padding: 12px; border: 1px solid var(--border); border-radius: 10px; background: rgba(15, 23, 42, .38); }
.contact-link span { grid-row: span 2; color: var(--accent-light); font-size: 24px; }
.contact-link small { color: var(--muted); font-size: .7rem; }
.contact-link strong { color: var(--text); font-size: .78rem; overflow-wrap: anywhere; }
.contact-link:hover { border-color: var(--border-strong); background: rgba(37, 99, 235, .1); }
.connect-button { display: flex; align-items: center; justify-content: center; gap: 10px; border-radius: 10px; background: linear-gradient(135deg, #1d4ed8, #1e3a8a); color: white; font-weight: 900; font-size: .86rem; }
.connect-button:hover { filter: brightness(1.08); }

.footer { display: flex; justify-content: space-between; align-items: center; gap: 18px; padding: 22px 0 8px; color: var(--muted-strong); font-size: .86rem; }
.footer span { color: #ef4444; }
.footer a { color: var(--muted-strong); }
.footer a:hover { color: var(--text); }

.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.65s ease, transform 0.65s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.delay-1 { transition-delay: 0.08s; }
.delay-2 { transition-delay: 0.16s; }
.delay-3 { transition-delay: 0.24s; }

.mobile-menu-button { display: none; }

@media (max-width: 1180px) {
  .shell { width: calc(100% - var(--sidebar-width)); }
  .hero-grid { grid-template-columns: 1fr; }
  .profile-card { max-width: 390px; }
  .project-grid { grid-template-columns: 1fr; }
  .contact-row { grid-template-columns: 1fr 1fr; }
  .connect-button { min-height: 62px; }
}

@media (max-width: 900px) {
  .mobile-menu-button {
    display: grid;
    gap: 5px;
    position: fixed;
    top: 18px;
    left: 18px;
    z-index: 50;
    width: 48px;
    height: 48px;
    place-content: center;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: var(--panel-strong);
    cursor: pointer;
  }
  .mobile-menu-button span { display: block; width: 20px; height: 2px; background: var(--text); border-radius: 999px; }
  .sidebar { transform: translateX(-120%); transition: transform .25s ease; box-shadow: var(--shadow); }
  .sidebar.open { transform: translateX(0); }
  .shell { width: 100%; margin-left: 0; padding: 86px 18px 18px; }
  h1 { font-size: clamp(3.2rem, 16vw, 5rem); }
  .about-grid, .skills-grid { grid-template-columns: 1fr; }
  .timeline::before { display: none; }
  .timeline-item { grid-template-columns: 1fr; gap: 8px; }
  .timeline-date { padding-top: 0; }
}

.project-tech-icons img,
.skill-logo img {
    filter:
        drop-shadow(0 0 8px rgba(255,255,255,0.08));
}
.skill-logo img {
    object-fit: contain;
}

@media (max-width: 640px) {
  .section { padding: 28px 0; }
  .hero-section { padding-bottom: 36px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .button { width: 100%; }
  .profile-card { max-width: none; }
  .profile-image-wrap { width: 220px; }
  .section-heading-row { align-items: flex-start; flex-direction: column; }
  .contact-row { grid-template-columns: 1fr; }
  .footer { flex-direction: column; align-items: flex-start; }
}