:root {
  --font: "Roboto", system-ui, -apple-system, sans-serif;
  --bg: #ffffff;
  --bg-alt: #f5f4f2;
  --text: #6b6b6b;
  --heading: #2a2a2a;
  --accent: #b8a07e;
  --accent-dark: #9a8468;
  --dark: #1c1c1c;
  --header-height: 72px;
  --radius: 12px;
  --shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
  --transition: 0.3s ease;
}

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

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 10000;
  padding: 0.75rem 1.25rem;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.skip-link:focus {
  top: 1rem;
  color: #fff;
}

:focus {
  outline: none;
}

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

a:focus-visible,
.btn:focus-visible,
button:focus-visible,
.mobile-nav-toggle:focus-visible,
.hero .social-links a:focus-visible,
.footer-social a:focus-visible,
.navmenu a:focus-visible,
.project-links a:focus-visible,
.featured-links a:focus-visible,
.portfolio-filters button:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

.hero .social-links a:focus-visible,
.footer-social a:focus-visible {
  outline-color: #fff;
}

body {
  margin: 0;
  font-family: var(--font);
  font-weight: 300;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
}

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--accent-dark);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--heading);
  font-weight: 700;
  line-height: 1.25;
}

p {
  margin-top: 0;
}

ul {
  padding-left: 0;
}

.container {
  width: min(1140px, calc(100% - 2rem));
  margin-inline: auto;
}

/* Header */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--header-height);
  z-index: 1000;
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition);
}

.site-header.scrolled {
  background: rgba(28, 28, 28, 0.92);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  color: #fff;
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.logo:hover {
  color: #fff;
  opacity: 0.9;
}

.navmenu ul {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  margin: 0;
}

.navmenu a {
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.95rem;
  font-weight: 300;
  padding: 0.55rem 0.9rem;
  border-radius: 999px;
  transition: color var(--transition), background var(--transition);
}

.navmenu a:hover,
.navmenu a.active {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

.inner-page .site-header:not(.scrolled) {
  background: rgba(28, 28, 28, 0.95);
}

.mobile-nav-toggle {
  display: none;
  border: 0;
  background: transparent;
  color: #fff;
  font-size: 1.75rem;
  cursor: pointer;
  padding: 0.25rem;
}

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

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

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.55), rgba(0, 0, 0, 0.75));
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: calc(var(--header-height) + 2rem) 1rem 4rem;
  max-width: 760px;
}

.hero h1 {
  color: #fff;
  font-size: clamp(2.5rem, 6vw, 4rem);
  margin: 0 0 1rem;
}

.hero .lead {
  font-size: clamp(1.1rem, 2.5vw, 1.45rem);
  margin-bottom: 2rem;
  color: rgba(255, 255, 255, 0.9);
}

.hero .social-links {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.hero .social-links a,
.footer-social a {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: #fff;
  font-size: 1.1rem;
  transition: transform var(--transition), background var(--transition);
}

.hero .social-links a:hover,
.footer-social a:hover {
  background: var(--accent-dark);
  color: #fff;
  transform: translateY(-2px);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem 1.25rem;
  margin-bottom: 1.5rem;
}

.footer-nav a {
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 300;
}

.footer-nav a:hover {
  color: var(--accent);
}

.breadcrumb {
  margin-bottom: 1rem;
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.35rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
}

.breadcrumb li + li::before {
  content: "/";
  margin-right: 0.35rem;
  opacity: 0.6;
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.85);
}

.breadcrumb a:hover {
  color: #fff;
}

.breadcrumb [aria-current="page"] {
  color: #fff;
  font-weight: 700;
}

.home-intro {
  padding: 3rem 0;
  text-align: center;
}

.home-intro h2 {
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  font-weight: 700;
  margin: 0 0 1rem;
}

.home-intro p {
  max-width: 760px;
  margin: 0 auto;
  font-size: 1.05rem;
}

.about-cta {
  margin-top: 1.5rem;
}

/* Home Metrics */
.home-metrics {
  text-align: center;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.metric-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
}

.metric-number {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

.metric-label {
  font-size: 0.95rem;
  color: var(--text);
  font-weight: 300;
}

/* Home Featured Projects */
.home-featured .section-header h2 {
  font-weight: 700;
}

.featured-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.featured-card {
  background: var(--bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition), box-shadow var(--transition);
}

.featured-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.12);
}

.featured-thumb {
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: #f4f4f6;
}

.featured-thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 0.5s ease;
}

.featured-card:hover .featured-thumb img {
  transform: scale(1.03);
}

.featured-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  flex: 1;
}

.featured-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.featured-body h3 {
  margin: 0;
  font-size: 1.15rem;
}

.featured-body p {
  margin: 0;
  font-size: 0.95rem;
  flex: 1;
}

.featured-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: auto;
}

.featured-cta {
  text-align: center;
  margin-top: 2.5rem;
}

/* btn-sm */
.btn-sm {
  padding: 0.55rem 1.1rem;
  font-size: 0.9rem;
  gap: 0.4rem;
}

.btn-sm i {
  font-size: 1rem;
}

.btn-outline-dark {
  border-color: var(--heading);
  color: var(--heading);
  background: transparent;
}

.btn-outline-dark:hover {
  background: var(--heading);
  color: #fff;
}

/* Home CTA */
.home-contact-cta {
  background: var(--dark);
}

.home-contact-cta .cta-box {
  text-align: center;
  max-width: 680px;
  margin-inline: auto;
}

.home-contact-cta h2 {
  color: #fff;
  font-size: clamp(1.75rem, 3.5vw, 2.25rem);
  margin: 0 0 1rem;
}

.home-contact-cta p {
  color: rgba(255, 255, 255, 0.75);
  font-size: 1.05rem;
  margin: 0 0 2rem;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
}

.btn-outline-light {
  border-color: rgba(255, 255, 255, 0.7);
  color: #fff;
  background: transparent;
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border-color: #fff;
}

@media (max-width: 991px) {
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .featured-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 575px) {
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
  }

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

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.5rem;
  border-radius: 999px;
  font-weight: 700;
  border: 2px solid transparent;
  transition: all var(--transition);
  cursor: pointer;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-dark);
  color: #fff;
}

.btn-outline {
  border-color: rgba(255, 255, 255, 0.8);
  color: #fff;
  background: transparent;
}

.btn-outline:hover {
  background: #fff;
  color: var(--dark);
}

/* Page banner */
.page-banner {
  padding: calc(var(--header-height) + 3rem) 0 3rem;
  background: var(--dark);
  color: #fff;
  text-align: center;
}

.page-banner h1 {
  color: #fff;
  margin: 0 0 0.5rem;
  font-size: clamp(2rem, 4vw, 2.75rem);
}

.page-banner p {
  margin: 0;
  color: rgba(255, 255, 255, 0.75);
  max-width: 620px;
  margin-inline: auto;
}

/* Sections */
.section {
  padding: 5rem 0;
}

.section-alt {
  background: var(--bg-alt);
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3rem;
}

.section-header h2 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 300;
  margin: 0 0 0.75rem;
}

.section-header p {
  margin: 0;
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 3rem;
  align-items: start;
}

.profile-photo {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  width: 100%;
}

.about-content h3 {
  margin-top: 0;
  font-size: 1.5rem;
}

.about-list {
  list-style: none;
  margin: 1.5rem 0 0;
}

.about-list li {
  display: flex;
  gap: 0.65rem;
  margin-bottom: 0.75rem;
}

.about-list i {
  color: var(--accent);
  flex-shrink: 0;
  margin-top: 0.2rem;
}

.about-details {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 2rem;
}

.about-details ul {
  list-style: none;
  margin: 0;
}

.about-details li {
  margin-bottom: 0.65rem;
}

/* Skills */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.skill-card {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  display: flex;
  gap: 1rem;
  height: 100%;
}

.section-alt .skill-card {
  background: #fff;
}

.skill-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: color-mix(in srgb, var(--accent), transparent 85%);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  flex-shrink: 0;
}

.skill-card h3 {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
}

.skill-card p {
  margin: 0;
  font-size: 0.95rem;
}

/* Partners */
.partners-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.partner-card {
  text-align: center;
  background: var(--bg-alt);
  border-radius: var(--radius);
  padding: 2rem 1.25rem;
  height: 100%;
}

.section-alt .partner-card {
  background: #fff;
  box-shadow: var(--shadow);
}

.partner-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 1rem;
  border-radius: 50%;
  background: color-mix(in srgb, var(--accent), transparent 85%);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}

.partner-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
}

.partner-card p {
  margin: 0;
  font-size: 0.92rem;
}

/* Portfolio */
.portfolio-filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  list-style: none;
  margin: 0 0 2.5rem;
  padding: 0;
}

.portfolio-filters li {
  list-style: none;
}

.portfolio-filters button {
  border: 1px solid color-mix(in srgb, var(--accent), transparent 60%);
  background: transparent;
  color: var(--heading);
  padding: 0.5rem 1rem;
  border-radius: 999px;
  cursor: pointer;
  font-family: var(--font);
  font-weight: 300;
  transition: all var(--transition);
}

.portfolio-filters button.active,
.portfolio-filters button:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.project-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.project-card.hidden {
  display: none;
}

.project-thumb {
  position: relative;
  aspect-ratio: 1;
  max-width: 220px;
  margin: 1.5rem auto 0;
  background: #f4f4f6;
  border-radius: 12px;
  overflow: hidden;
}

.project-thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.project-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  opacity: 0;
  transition: opacity var(--transition);
}

.project-thumb:hover .project-overlay,
.project-thumb:focus-within .project-overlay {
  opacity: 1;
}

.project-overlay a {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.project-overlay a:focus-visible {
  outline: 3px solid #fff;
  outline-offset: 3px;
  background: var(--accent-dark);
}

.project-body {
  padding: 1.25rem 1.5rem 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.project-body h3 {
  margin: 0 0 0.75rem;
  font-size: 1.1rem;
}

.badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent), transparent 85%);
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  margin-bottom: 0.75rem;
}

.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: auto;
  padding-top: 1rem;
}

.project-links a {
  font-weight: 700;
  font-size: 0.9rem;
}

/* Education */
.education-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.education-item {
  border-left: 3px solid var(--accent);
  padding: 0 0 0 1.25rem;
  position: relative;
}

.education-item::before {
  content: "";
  position: absolute;
  left: -9px;
  top: 4px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--bg);
  border: 3px solid var(--accent);
}

.section-alt .education-item::before {
  background: var(--bg-alt);
}

.education-item h3 {
  margin: 0 0 0.35rem;
  font-size: 1.15rem;
}

.education-tag {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent), transparent 85%);
  padding: 0.2rem 0.75rem;
  border-radius: 999px;
  margin-bottom: 0.75rem;
}

.education-item em {
  display: block;
  margin-bottom: 0.5rem;
  font-style: normal;
  font-weight: 700;
  color: var(--heading);
}

/* Contact */
.contact-info {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.info-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.info-card i {
  font-size: 1.5rem;
  color: var(--accent);
}

.info-card h3 {
  margin: 0 0 0.35rem;
  font-size: 1rem;
}

.info-card p {
  margin: 0;
}

.contact-form {
  max-width: 800px;
  margin: 0 auto;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.form-grid .full {
  grid-column: 1 / -1;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-label {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--heading);
}

.form-control {
  width: 100%;
  padding: 0.9rem 1rem;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-family: var(--font);
  font-weight: 300;
  font-size: 1rem;
  background: #fff;
  transition: border-color var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--accent);
}

.form-control:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent), transparent 40%);
  outline-offset: 2px;
  border-color: var(--accent);
}

textarea.form-control {
  min-height: 160px;
  resize: vertical;
}

.form-actions {
  text-align: center;
  margin-top: 0.5rem;
}

.form-popup {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  max-width: 320px;
  padding: 0.85rem 1rem;
  border-radius: 10px;
  color: #fff;
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  z-index: 1000;
}

.form-popup.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.form-popup.is-success {
  background: #198754;
}

.form-popup.is-error {
  background: #dc3545;
}

/* Footer */
.site-footer {
  background: var(--bg-alt);
  text-align: center;
  padding: 3rem 0 2rem;
}

.site-footer h3 {
  margin: 0 0 0.75rem;
  font-size: 1.75rem;
}

.site-footer > .container > p {
  max-width: 560px;
  margin: 0 auto 1.5rem;
}

.footer-social {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.copyright {
  padding-top: 1.5rem;
  border-top: 1px solid #e5e5e5;
  font-size: 0.9rem;
}

/* Scroll top */
.scroll-top {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
  z-index: 999;
  font-size: 1.5rem;
}

.scroll-top.active {
  opacity: 1;
  visibility: visible;
}

.scroll-top:hover {
  background: var(--accent-dark);
  color: #fff;
}

/* Mobile nav */
@media (max-width: 991px) {
  .mobile-nav-toggle {
    display: block;
  }

  .navmenu {
    position: fixed;
    inset: var(--header-height) 1rem auto 1rem;
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 0.75rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition);
  }

  body.mobile-nav-open .navmenu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .navmenu ul {
    flex-direction: column;
    align-items: stretch;
  }

  .navmenu a {
    color: var(--heading);
    border-radius: 8px;
  }

  .navmenu a:hover,
  .navmenu a.active {
    background: var(--bg-alt);
    color: var(--accent);
  }

  .about-grid,
  .skills-grid,
  .partners-grid,
  .projects-grid,
  .education-grid,
  .contact-info,
  .about-details {
    grid-template-columns: 1fr;
  }

  .profile-photo {
    max-width: 280px;
    margin-inline: auto;
  }
}

@media (max-width: 575px) {
  .section {
    padding: 3.5rem 0;
  }

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

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
}