/* ---------- Reset & base ---------- */
:root {
  --neutral-900: #171717;
  --neutral-800: #262626;
  --neutral-700: #404040;
  --neutral-500: #737373;
  --neutral-400: #a3a3a3;
  --neutral-300: #d4d4d4;
  --neutral-200: #e5e5e5;
  --neutral-100: #f5f5f5;
  --stone-900: #1c1917;
  --stone-800: #292524;
  --gray-800: #1f2937;
  --orange-400: #fb923c;
  --orange-500: #f97316;
  --orange-600: #ea580c;
  --white: #ffffff;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--neutral-900);
  color: #444;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Ubuntu, 'Helvetica Neue', sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  display: block;
}

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

h1, h2, h3, p, dl {
  margin: 0;
}

.icon {
  flex-shrink: 0;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

.section {
  padding: 4rem 1rem;
}

@media (min-width: 768px) {
  .section { padding: 6rem 2rem; }
}

.section > * {
  max-width: 1024px;
  margin: 0 auto;
}

.section-dark {
  background: var(--neutral-800);
}

.section-light {
  background: var(--neutral-100);
  color: #1c1c1c;
}

/* ---------- Header / nav ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  display: none;
  padding: 1rem;
  background: rgba(23, 23, 23, 0.5);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

@media (min-width: 640px) {
  .site-header { display: block; }
}

.site-nav {
  display: flex;
  justify-content: center;
  gap: 2rem;
}

.site-nav a {
  padding: 0.375rem;
  border-radius: 0.375rem;
  font-weight: 700;
  color: var(--neutral-100);
  text-transform: capitalize;
  transition: color 0.3s;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--orange-500);
}

.mobile-nav-toggle {
  position: fixed;
  top: 0.5rem;
  right: 0.5rem;
  z-index: 40;
  display: flex;
  border: none;
  border-radius: 0.375rem;
  background: var(--orange-500);
  color: var(--white);
  padding: 0.5rem;
  cursor: pointer;
}

.mobile-nav-toggle:hover {
  background: #fb8a3c;
}

@media (min-width: 640px) {
  .mobile-nav-toggle { display: none; }
}

.mobile-nav-overlay {
  position: fixed;
  inset: 0;
  z-index: 40;
  background: rgba(28, 25, 23, 0.75);
}

.mobile-nav {
  position: fixed;
  inset: 0 20% 0 0;
  z-index: 40;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 1.25rem;
  padding: 0 0.5rem;
  background: var(--stone-800);
}

.mobile-nav a {
  padding: 0.5rem;
  border-radius: 0.375rem;
  color: var(--neutral-200);
  font-weight: 500;
  text-transform: capitalize;
}

.mobile-nav a.active {
  background: var(--neutral-900);
  color: var(--white);
  font-weight: 700;
}

@media (min-width: 640px) {
  .mobile-nav-overlay,
  .mobile-nav { display: none; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  min-height: 100vh;
  overflow: hidden;
}

@supports (-webkit-touch-callout: none) {
  .hero { height: -webkit-fill-available; }
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-content {
  position: relative;
  z-index: 10;
  width: 100%;
  max-width: 1024px;
  padding: 0 1rem;
}

.hero-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  padding: 1.5rem;
  border-radius: 0.75rem;
  background: rgba(31, 41, 55, 0.4);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  text-align: center;
}

.hero-card h1 {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--white);
}

@media (min-width: 640px) {
  .hero-card h1 { font-size: 3rem; }
}

@media (min-width: 1024px) {
  .hero-card h1 { font-size: 4.5rem; }
}

.hero-card p {
  color: var(--neutral-200);
  font-size: 0.95rem;
  line-height: 1.6;
}

.hero-card strong {
  color: var(--neutral-100);
}

@media (min-width: 1024px) {
  .hero-card p { font-size: 1.125rem; }
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
  width: 100%;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border: 2px solid var(--white);
  border-radius: 9999px;
  color: var(--white);
  font-size: 0.875rem;
  font-weight: 500;
  transition: background 0.2s;
}

.btn:hover {
  background: rgba(55, 65, 81, 0.8);
}

.btn-primary {
  border-color: var(--orange-500);
}

.hero-scroll-down {
  position: absolute;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  padding: 0.5rem;
  border-radius: 9999px;
  background: var(--white);
  color: #111;
}

.hero-photo-credit {
  position: absolute;
  bottom: 0.5rem;
  right: 0.75rem;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.5);
  transition: color 0.2s;
}

.hero-photo-credit:hover {
  color: rgba(255, 255, 255, 0.9);
}

/* ---------- Socials (shared) ---------- */
.socials {
  display: flex;
  gap: 1rem;
  color: var(--neutral-100);
}

.socials a {
  padding: 0.375rem;
  border-radius: 0.375rem;
  transition: color 0.3s;
}

.socials a:hover {
  color: var(--orange-500);
}

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 768px) {
  .about-grid { grid-template-columns: repeat(4, 1fr); }
}

.about-photo {
  display: flex;
  justify-content: center;
}

@media (min-width: 768px) {
  .about-photo { justify-content: flex-start; }
}

.about-photo img {
  width: 6rem;
  height: 6rem;
  border-radius: 0.75rem;
  object-fit: cover;
}

@media (min-width: 768px) {
  .about-photo img { width: 8rem; height: 8rem; }
}

.about-body {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .about-body { grid-column: span 3; }
}

.about-body h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.5rem;
}

.about-body p {
  color: var(--neutral-300);
  font-size: 0.9rem;
}

.about-items {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

@media (min-width: 640px) {
  .about-items { grid-template-columns: repeat(2, 1fr); }
}

.about-items li {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  color: var(--neutral-300);
  font-size: 0.875rem;
}

.about-items .icon {
  color: var(--white);
}

.about-items .label {
  font-weight: 700;
  color: var(--white);
}

/* ---------- Resume ---------- */
.resume-block {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  padding: 2rem 0;
  border-bottom: 2px solid var(--neutral-300);
}

.resume-block:first-of-type {
  padding-top: 0;
}

.resume-block:last-of-type {
  padding-bottom: 0;
  border-bottom: none;
}

@media (min-width: 768px) {
  .resume-block { grid-template-columns: repeat(4, 1fr); }
}

.resume-block-title {
  position: relative;
  align-self: start;
  width: max-content;
  margin: 0 auto;
  padding-bottom: 0.25rem;
  border-bottom: 2px solid var(--orange-400);
  font-size: 1.25rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--neutral-800);
}

@media (min-width: 768px) {
  .resume-block-title { margin: 0; }
}

.resume-block-body {
  display: flex;
  flex-direction: column;
}

@media (min-width: 768px) {
  .resume-block-body { grid-column: span 3; }
}

.timeline-item {
  display: flex;
  flex-direction: column;
  padding-bottom: 2rem;
  text-align: center;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

@media (min-width: 768px) {
  .timeline-item { text-align: left; }
}

.timeline-item h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.timeline-meta {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
  font-size: 0.875rem;
}

@media (min-width: 768px) {
  .timeline-meta { justify-content: flex-start; }
}

.timeline-meta .location {
  font-style: italic;
  font-weight: 500;
}

.timeline-item p {
  line-height: 1.6;
}

.skills-intro {
  padding-bottom: 2rem;
}

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

@media (min-width: 768px) {
  .skills-grid { grid-template-columns: repeat(2, 1fr); }
}

.skill-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.skill-group-name {
  text-align: center;
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.skill {
  display: flex;
  flex-direction: column;
}

.skill span {
  margin-left: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
}

.skill-bar {
  height: 1.25rem;
  width: 100%;
  overflow: hidden;
  border-radius: 9999px;
  background: var(--neutral-300);
}

.skill-bar-fill {
  height: 100%;
  border-radius: 9999px;
  background: var(--orange-400);
}

/* ---------- Contact ---------- */
.contact-header {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

@media (min-width: 768px) {
  .contact-header { flex-direction: row; align-items: center; }
}

.contact-header h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--white);
}

.icon-envelope-lg {
  display: none;
  color: var(--white);
}

@media (min-width: 768px) {
  .icon-envelope-lg { display: block; }
}

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

@media (min-width: 768px) {
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
}

.contact-form {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  min-height: 320px;
  order: 2;
}

@media (min-width: 768px) {
  .contact-form { order: 1; }
}

.contact-form input,
.contact-form textarea {
  border: 0;
  border-radius: 0.375rem;
  background: var(--neutral-700);
  color: var(--neutral-200);
  font-size: 0.875rem;
  padding: 0.5rem 0.75rem;
  font-family: inherit;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: var(--neutral-400);
  font-size: 0.875rem;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  box-shadow: 0 0 0 1px var(--orange-600);
}

.contact-form button {
  width: max-content;
  padding: 0.5rem 1rem;
  border: 2px solid var(--orange-600);
  border-radius: 9999px;
  background: var(--stone-900);
  color: var(--white);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s;
}

.contact-form button:hover {
  background: var(--stone-800);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  order: 1;
}

@media (min-width: 768px) {
  .contact-info { order: 2; }
}

.contact-info p {
  color: var(--neutral-300);
  line-height: 1.6;
}

.contact-info dl {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  color: var(--neutral-500);
}

.contact-info dd a {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem;
  margin: -0.5rem;
  border-radius: 0.375rem;
  color: var(--neutral-300);
  transition: color 0.2s;
}

.contact-info dd a:hover {
  color: var(--orange-500);
}

.contact-info dd .icon {
  color: var(--neutral-100);
}

.contact-info dd span:last-child {
  font-size: 0.95rem;
}

/* ---------- Footer ---------- */
.site-footer {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  padding: 3rem 1rem 1.5rem;
  background: var(--neutral-900);
}

@media (min-width: 640px) {
  .site-footer { padding: 3.5rem 2rem 2rem; }
}

.footer-up {
  position: absolute;
  top: -1rem;
  display: flex;
  padding: 0.5rem;
  border-radius: 9999px;
  background: var(--neutral-100);
  color: #111;
}

.site-footer .socials {
  color: var(--neutral-500);
}

.footer-copyright {
  font-size: 0.875rem;
  color: var(--neutral-700);
}