:root {
  --bg: #faf7f2;
  --surface: #ffffff;
  --ink: #14161f;
  --muted: #63687a;
  --line: #e7e2da;
  --accent: #3454d1;
  --accent-soft: #eef1fd;
  --accent-2: #0f9e93;
  --accent-2-soft: #e6f6f4;
  --accent-3: #e8763a;
  --accent-3-soft: #fdefe4;
  --font-display: "Space Grotesk", sans-serif;
  --font-body: "Inter", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.page {
  max-width: 640px;
  margin: 0 auto;
  padding: 4rem 1.5rem 6rem;
}

@media (min-width: 860px) {
  html {
    font-size: 18px;
  }

  .page {
    max-width: 760px;
    padding: 6rem 2rem 8rem;
  }

  .hero {
    margin-bottom: 5.5rem;
  }

  .block {
    margin-bottom: 4.2rem;
  }
}

/* Hero */
.hero {
  position: relative;
  text-align: center;
  margin-bottom: 4.5rem;
}

.hero::before {
  content: "";
  position: absolute;
  top: -3rem;
  left: 50%;
  width: 22rem;
  height: 14rem;
  transform: translateX(-50%);
  background: radial-gradient(circle at 30% 30%, var(--accent-soft), transparent 60%),
              radial-gradient(circle at 70% 60%, var(--accent-3-soft), transparent 55%);
  filter: blur(2px);
  z-index: 0;
}

.portrait {
  position: relative;
  z-index: 1;
  width: 6.5rem;
  height: 6.5rem;
  margin: 0 auto 1.5rem;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid var(--surface);
  box-shadow: 0 0 0 1px var(--line);
}

.portrait img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.name {
  position: relative;
  z-index: 1;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2.1rem, 4vw, 2.75rem);
  letter-spacing: -0.01em;
  opacity: 0;
  transform: translateY(10px);
  animation: rise 0.6s ease forwards;
}

.accent-line {
  display: block;
  width: 0;
  height: 3px;
  margin: 0.9rem auto 1.1rem;
  background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--accent-3));
  border-radius: 2px;
  animation: draw 0.7s ease 0.5s forwards;
}

.role {
  color: var(--muted);
  font-size: 0.98rem;
  max-width: 30rem;
  margin: 0 auto;
  opacity: 0;
  animation: rise 0.6s ease 0.25s forwards;
}

.location {
  color: var(--muted);
  font-size: 0.85rem;
  margin-top: 0.6rem;
  opacity: 0;
  animation: rise 0.6s ease 0.35s forwards;
}

.location i {
  margin-right: 0.3rem;
}

@keyframes rise {
  to { opacity: 1; transform: translateY(0); }
}

@keyframes draw {
  to { width: 3rem; }
}

@media (prefers-reduced-motion: reduce) {
  .name, .accent-line, .role, .location {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
    width: 3rem !important;
  }
}

/* Section blocks */
.block {
  margin-bottom: 3.5rem;
}

.block h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.15rem;
  padding-bottom: 0.7rem;
  margin-bottom: 1.3rem;
  border-bottom: 2px solid var(--line);
}

.block h2.accent-a { border-bottom-color: var(--accent); }
.block h2.accent-b { border-bottom-color: var(--accent-2); }
.block h2.accent-c { border-bottom-color: var(--accent-3); }

.block p {
  color: var(--ink);
  margin-bottom: 0.9rem;
}

.block p:last-child {
  margin-bottom: 0;
}

/* Projects */
.project-row, .post-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
  transition: padding-left 0.15s ease;
}

.project-row:last-child, .post-row:last-child {
  border-bottom: none;
}

.project-row:hover, .post-row:hover {
  padding-left: 0.4rem;
}

.project-text h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.project-text p {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0;
}

.project-row i, .post-row i {
  color: var(--accent-2);
  font-size: 0.9rem;
  flex-shrink: 0;
}

/* Blog */
.post-tags {
  display: flex;
  gap: 0.4rem;
  margin-bottom: 0.35rem;
}

.tag {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
}

.tag-network { background: var(--accent-2-soft); color: var(--accent-2); }
.tag-ir { background: var(--accent-3-soft); color: var(--accent-3); }
.tag-forensics { background: var(--accent-soft); color: var(--accent); }

.post-date {
  color: var(--muted);
  font-size: 0.85rem;
  margin-bottom: 2rem;
}

.post-body h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  margin: 2rem 0 0.8rem;
}

.post-body ul, .post-body ol {
  margin: 0 0 1rem 1.2rem;
  color: var(--ink);
}

.post-body ul { list-style: disc; }
.post-body ol { list-style: decimal; }

.post-body li {
  margin-bottom: 0.4rem;
}

.post-body code {
  background: var(--accent-soft);
  color: var(--accent);
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  font-size: 0.85em;
}

.post-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0 1.5rem;
  font-size: 0.9rem;
}

.post-body th, .post-body td {
  text-align: left;
  padding: 0.6rem 0.8rem;
  border-bottom: 1px solid var(--line);
}

.post-body th {
  color: var(--muted);
  font-weight: 600;
}

.callout {
  background: var(--accent-3-soft);
  border-left: 3px solid var(--accent-3);
  padding: 0.9rem 1.1rem;
  border-radius: 6px;
  font-size: 0.9rem;
  color: var(--ink);
  margin-bottom: 1.5rem;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 2.5rem;
}

.back-link:hover {
  color: var(--accent);
}

/* Lightbox */
.lightbox-overlay {
  position: fixed;
  inset: 0;
  background: rgba(20, 22, 31, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  z-index: 999;
  cursor: zoom-out;
  animation: fade-in 0.15s ease;
}

.lightbox-overlay img {
  max-width: 100%;
  max-height: 100%;
  border-radius: 8px;
  cursor: zoom-out;
}

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Accordion */
.accordion {
  border-bottom: 1px solid var(--line);
}

.accordion:first-of-type {
  border-top: 1px solid var(--line);
}

.accordion-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
  background: none;
  border: none;
  cursor: pointer;
  font: inherit;
  font-weight: 500;
  color: var(--ink);
  text-align: left;
}

.accordion-header i {
  color: var(--muted);
  font-size: 0.85rem;
  transition: transform 0.25s ease;
  flex-shrink: 0;
}

.accordion-header[aria-expanded="true"] i {
  transform: rotate(180deg);
}

.accordion-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.accordion-panel p {
  color: var(--muted);
  font-size: 0.92rem;
  padding-bottom: 1rem;
}

.badge-list {
  padding-bottom: 1.1rem;
}

.badge-list li {
  position: relative;
  padding-left: 1rem;
  color: var(--muted);
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
}

.badge-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent-3);
}

/* Simple list */
.simple-list li {
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.95rem;
}

.simple-list li:last-child {
  border-bottom: none;
}

.simple-list strong {
  font-weight: 600;
}

/* Contact */
.contact-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 2rem;
}

.contact-row a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 500;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.contact-row a:hover {
  border-bottom-color: currentColor;
}

.contact-row i {
  color: var(--accent);
}

.contact-row a[href^="mailto"] i { color: var(--accent); }
.contact-row a[href^="mailto"]:hover { color: var(--accent); }

.contact-row a[href*=".pdf"] i { color: var(--accent-3); }
.contact-row a[href*=".pdf"]:hover { color: var(--accent-3); }

.contact-row a[href*="github"] i { color: var(--ink); }
.contact-row a[href*="github"]:hover { color: var(--ink); }

.contact-row a[href*="linkedin"] i { color: var(--accent-2); }
.contact-row a[href*="linkedin"]:hover { color: var(--accent-2); }

/* Tab nav */
.tab-nav {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 3rem;
}

.tab-nav a {
  padding: 0.5rem 1.2rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--muted);
  border: 1px solid var(--line);
  transition: all 0.15s ease;
}

.tab-nav a:hover {
  color: var(--ink);
}

.tab-nav a.active {
  background: var(--ink);
  color: var(--surface);
  border-color: var(--ink);
}

@media (min-width: 700px) {
  .page {
    padding-top: 5rem;
  }
}