:root {
  --blue: #0647ff;
  --blue-strong: #0021a8;
  --yellow: #ffd100;
  --yellow-soft: #ffe66d;
  --ink: #101828;
  --muted: #5a6475;
  --surface: #ffffff;
  --surface-2: #f3f6ff;
  --line: rgba(6, 71, 255, 0.16);
  --shadow: 0 18px 55px rgba(0, 33, 168, 0.14);
}

[data-bs-theme="dark"] {
  --ink: #f8fbff;
  --muted: #b8c3d8;
  --surface: #071024;
  --surface-2: #0d1a33;
  --line: rgba(255, 209, 0, 0.2);
  --shadow: 0 18px 55px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--surface);
  color: var(--ink);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

section {
  scroll-margin-top: 78px;
}

.fw-black {
  font-weight: 900;
}

.portfolio-nav {
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
  min-height: 69px;
}

.navbar-brand {
  color: var(--blue);
  letter-spacing: 0;
}

[data-bs-theme="dark"] .navbar-brand {
  color: var(--yellow);
}

.nav-link {
  color: var(--ink);
  font-weight: 700;
}

.nav-link:hover,
.nav-link:focus {
  color: var(--blue);
}

.navbar-toggler {
  align-items: center;
  background: var(--blue);
  border: 0;
  border-radius: 8px;
  color: #fff;
  display: inline-flex;
  font-size: 1.45rem;
  height: 44px;
  justify-content: center;
  padding: 0;
  width: 44px;
}

.navbar-toggler:focus {
  box-shadow: 0 0 0 0.2rem color-mix(in srgb, var(--yellow) 42%, transparent);
}

[data-bs-theme="dark"] .navbar-toggler {
  background: var(--yellow);
  color: #061024;
}

.nav-offcanvas {
  --bs-offcanvas-bg: var(--surface);
  --bs-offcanvas-color: var(--ink);
  background: var(--surface);
  background-color: var(--surface);
  color: var(--ink);
}

.offcanvas-backdrop.show {
  opacity: 0.58;
}

[data-bs-theme="dark"] .offcanvas-backdrop.show {
  opacity: 0.72;
}

.offcanvas-title {
  color: var(--blue);
  font-size: 1.2rem;
  font-weight: 900;
  letter-spacing: 0;
}

[data-bs-theme="dark"] .offcanvas-title {
  color: var(--yellow);
}

.portfolio-dropdown {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  min-width: 270px;
  padding: 0.55rem;
}

.portfolio-dropdown .dropdown-item {
  align-items: center;
  border-radius: 6px;
  color: var(--ink);
  display: flex;
  font-weight: 800;
  gap: 0.65rem;
  min-height: 42px;
}

.portfolio-dropdown .dropdown-item i {
  color: var(--blue);
}

.portfolio-dropdown .dropdown-item:hover,
.portfolio-dropdown .dropdown-item:focus {
  background: color-mix(in srgb, var(--yellow) 24%, var(--surface));
  color: var(--ink);
}

.portfolio-dropdown .dropdown-divider {
  border-color: var(--line);
}

[data-bs-theme="dark"] .portfolio-dropdown .dropdown-item i {
  color: var(--yellow);
}

.theme-toggle {
  align-items: center;
  background: var(--ink);
  border: 0;
  border-radius: 999px;
  color: var(--surface);
  display: inline-flex;
  font-weight: 800;
  gap: 0.45rem;
  min-height: 42px;
  padding: 0.6rem 0.95rem;
}

.hero-section {
  min-height: 76vh;
  overflow: hidden;
  position: relative;
  margin-top: 25px;
}

.hero-row {
  min-height: 76vh;
}

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

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(1, 13, 43, 0.94) 0%, rgba(3, 24, 75, 0.84) 42%, rgba(3, 24, 75, 0.2) 100%),
    linear-gradient(0deg, rgba(0, 0, 0, 0.42), transparent 42%);
  inset: 0;
  position: absolute;
}

.hero-content {
  color: #fff;
  position: relative;
  z-index: 1;
}

.eyebrow,
.section-kicker {
  color: var(--yellow);
  font-size: 0.82rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  margin-bottom: 0.85rem;
  text-transform: uppercase;
}

.hero-section h1,
.section-heading h2,
section h2 {
  font-weight: 900;
  letter-spacing: 0;
}

.hero-section h1 {
  font-size: clamp(2.45rem, 5vw, 4.85rem);
  line-height: 0.98;
  max-width: 820px;
}

.hero-copy {
  color: rgba(255, 255, 255, 0.82);
  font-size: clamp(1rem, 2vw, 1.25rem);
  margin: 1.4rem 0 1.8rem;
  max-width: 680px;
}

.hero-actions,
.hero-metrics,
.tag-row,
.skill-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.btn {
  border-radius: 8px;
  font-weight: 900;
}

.btn-primary {
  --bs-btn-bg: var(--yellow);
  --bs-btn-border-color: var(--yellow);
  --bs-btn-color: #061024;
  --bs-btn-hover-bg: var(--yellow-soft);
  --bs-btn-hover-border-color: var(--yellow-soft);
  --bs-btn-hover-color: #061024;
}

.btn-outline-light {
  --bs-btn-border-color: rgba(255, 255, 255, 0.72);
  --bs-btn-hover-color: #061024;
}

.btn-outline-primary {
  --bs-btn-border-color: var(--blue);
  --bs-btn-color: var(--blue);
  --bs-btn-hover-bg: var(--blue);
  --bs-btn-hover-border-color: var(--blue);
  --bs-btn-hover-color: #fff;
}

[data-bs-theme="dark"] .btn-outline-primary {
  --bs-btn-border-color: var(--yellow);
  --bs-btn-color: var(--yellow);
  --bs-btn-hover-bg: var(--yellow);
  --bs-btn-hover-border-color: var(--yellow);
  --bs-btn-hover-color: #061024;
}

.hero-metrics {
  margin-top: 2rem;
}

.hero-metrics div {
  border-left: 4px solid var(--yellow);
  min-width: 150px;
  padding-left: 0.8rem;
}

.hero-metrics strong,
.hero-metrics span {
  display: block;
}

.hero-metrics span {
  color: rgba(255, 255, 255, 0.72);
}

.section-pad {
  padding: 6rem 0;
}

.alt-section {
  background: var(--surface-2);
}

.lead {
  color: var(--ink);
  font-weight: 650;
}

p {
  color: var(--muted);
}

.skill-cloud span,
.tag-row span {
  background: color-mix(in srgb, var(--yellow) 22%, var(--surface));
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 800;
  padding: 0.55rem 0.78rem;
}

.section-heading {
  margin-bottom: 2rem;
  max-width: 740px;
}

.project-card,
.cert-item,
.contact-form {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.project-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 1.5rem;
}

.project-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: auto;
  padding-top: 1.5rem;
}

.project-actions .btn {
  align-items: center;
  display: inline-flex;
  gap: 0.35rem;
}

.project-icon {
  align-items: center;
  background: var(--blue);
  border-radius: 8px;
  color: #fff;
  display: inline-flex;
  font-size: 1.35rem;
  height: 48px;
  justify-content: center;
  margin-bottom: 1rem;
  width: 48px;
}

.project-date {
  color: var(--blue);
  font-size: 0.86rem;
  font-weight: 900;
  margin-bottom: 0.55rem;
}

[data-bs-theme="dark"] .project-date {
  color: var(--yellow);
}

.project-card h3 {
  font-size: 1.35rem;
  font-weight: 900;
}

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

.cert-item {
  display: flex;
  flex-direction: column;
  min-height: 172px;
  padding: 1.25rem;
}

.cert-item i {
  color: var(--blue);
  display: block;
  font-size: 1.7rem;
  margin-bottom: 0.9rem;
}

[data-bs-theme="dark"] .cert-item i {
  color: var(--yellow);
}

.cert-item span,
.cert-item small {
  display: block;
}

.cert-item span {
  color: var(--ink);
  font-weight: 900;
}

.cert-item small {
  color: var(--muted);
  margin-top: 0.35rem;
}

.cert-btn {
  align-self: flex-start;
  margin-top: auto;
}

.link-panel {
  display: grid;
  gap: 0.8rem;
  grid-template-columns: repeat(2, 1fr);
}

.link-panel a {
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  display: flex;
  font-weight: 900;
  gap: 0.75rem;
  min-height: 72px;
  padding: 1rem;
  text-decoration: none;
  transition: transform 180ms ease, border-color 180ms ease;
}

.link-panel a:hover {
  border-color: var(--yellow);
  transform: translateY(-3px);
}

.link-panel i {
  color: var(--blue);
  font-size: 1.25rem;
}

[data-bs-theme="dark"] .link-panel i {
  color: var(--yellow);
}

.contact-section {
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--blue) 14%, transparent), transparent 42%),
    var(--surface);
}

.contact-form {
  padding: 1.5rem;
}

.form-control,
.form-select {
  background-color: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  min-height: 50px;
}

.form-control:focus,
.form-select:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 0.25rem rgba(6, 71, 255, 0.16);
}

.site-footer {
  background: var(--blue-strong);
  color: #fff;
  padding: 1.25rem 0;
}

.site-footer span {
  color: rgba(255, 255, 255, 0.82);
}

.project-detail {
  padding-top: 69px;
}

.project-hero {
  background:
    linear-gradient(135deg, rgba(6, 71, 255, 0.94), rgba(0, 33, 168, 0.9)),
    linear-gradient(45deg, rgba(255, 209, 0, 0.22), transparent);
  color: #fff;
  padding: 6rem 0 4.5rem;
}

.project-hero h1 {
  font-size: clamp(2.25rem, 5vw, 4.5rem);
  font-weight: 900;
  letter-spacing: 0;
  line-height: 1;
  max-width: 980px;
}

.project-hero p:not(.eyebrow) {
  color: rgba(255, 255, 255, 0.82);
  font-size: 1.15rem;
  max-width: 760px;
}

.project-hero .tag-row span {
  background: rgba(255, 209, 0, 0.16);
  border-color: rgba(255, 209, 0, 0.4);
  color: #fff;
}

.back-link {
  color: #fff;
  display: inline-flex;
  font-weight: 900;
  gap: 0.45rem;
  margin-bottom: 2rem;
  text-decoration: none;
}

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

.detail-copy p,
.detail-list {
  color: var(--muted);
  font-size: 1.05rem;
}

.detail-list {
  display: grid;
  gap: 0.85rem;
  margin: 1.5rem 0 0;
  padding-left: 1.15rem;
}

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

.gallery-item {
  align-items: center;
  aspect-ratio: 4 / 3;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--blue) 18%, var(--surface)), color-mix(in srgb, var(--yellow) 26%, var(--surface)));
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  color: var(--ink);
  cursor: zoom-in;
  display: flex;
  justify-content: center;
  overflow: hidden;
  padding: 0;
  position: relative;
  width: 100%;
}

.gallery-item img {
  height: 100%;
  object-fit: cover;
  transition: transform 220ms ease;
  width: 100%;
}

.gallery-item:hover img {
  transform: scale(1.04);
}

.gallery-item::after {
  align-items: center;
  background: rgba(0, 33, 168, 0.72);
  color: #fff;
  content: "\f62c";
  display: flex;
  font-family: "bootstrap-icons";
  font-size: 1.5rem;
  inset: 0;
  justify-content: center;
  opacity: 0;
  position: absolute;
  transition: opacity 180ms ease;
}

.gallery-item:hover::after,
.gallery-item:focus-visible::after {
  opacity: 1;
}

.gallery-empty {
  align-items: center;
  color: var(--ink);
  display: none;
  flex-direction: column;
  font-weight: 900;
  gap: 0.45rem;
  text-align: center;
}

.gallery-empty i {
  color: var(--blue);
  font-size: 2rem;
}

.gallery-item.is-empty {
  cursor: default;
}

.gallery-item.is-empty::after {
  display: none;
}

.gallery-item.is-empty .gallery-empty {
  display: flex;
}

[data-bs-theme="dark"] .gallery-empty i {
  color: var(--yellow);
}

.gallery-modal .modal-content {
  background: rgba(7, 16, 36, 0.96);
  border: 1px solid rgba(255, 209, 0, 0.28);
  border-radius: 8px;
}

.gallery-modal .modal-header {
  border-color: rgba(255, 255, 255, 0.12);
}

.gallery-modal .modal-title {
  color: #fff;
  font-weight: 900;
}

.gallery-modal .btn-close {
  filter: invert(1);
}

.gallery-modal-image {
  background:
    linear-gradient(135deg, rgba(6, 71, 255, 0.25), transparent),
    #071024;
  border-radius: 8px;
  display: block;
  max-height: 72vh;
  object-fit: contain;
  width: 100%;
}

.gallery-modal-placeholder {
  align-items: center;
  aspect-ratio: 16 / 10;
  background:
    linear-gradient(135deg, rgba(6, 71, 255, 0.34), rgba(255, 209, 0, 0.18)),
    #071024;
  border-radius: 8px;
  color: #fff;
  display: flex;
  flex-direction: column;
  font-weight: 900;
  gap: 0.6rem;
  justify-content: center;
  min-height: 320px;
}

.gallery-modal-placeholder i {
  color: var(--yellow);
  font-size: 3rem;
}

@media (max-width: 991.98px) {
  body {
    overflow-x: hidden;
  }

  section {
    scroll-margin-top: 72px;
  }

  .portfolio-nav .container {
    min-height: 56px;
  }

  .nav-offcanvas {
    --bs-offcanvas-width: min(88vw, 380px);
    background: var(--surface);
    background-color: var(--surface);
    border-left: 1px solid var(--line);
    box-shadow: -24px 0 60px rgba(0, 0, 0, 0.18);
  }

  .nav-offcanvas .offcanvas-header {
    background: var(--surface);
    border-bottom: 1px solid var(--line);
    min-height: 69px;
    padding: 1rem 1.15rem;
  }

  .nav-offcanvas .btn-close {
    background-color: color-mix(in srgb, var(--yellow) 28%, var(--surface));
    border-radius: 8px;
    filter: none;
    margin: 0;
    opacity: 1;
    padding: 0.75rem;
  }

  .nav-offcanvas .offcanvas-body {
    background:
      linear-gradient(180deg, color-mix(in srgb, var(--blue) 5%, transparent), transparent 34%),
      var(--surface);
    display: flex;
    flex-direction: column;
    min-height: calc(100dvh - 69px);
    padding: 1rem;
  }

  .navbar-nav {
    align-items: stretch;
    gap: 0.35rem;
    width: 100%;
  }

  .nav-link {
    background: color-mix(in srgb, var(--surface-2) 78%, var(--surface));
    border-radius: 8px;
    border: 1px solid var(--line);
    color: var(--ink);
    font-size: 1.05rem;
    min-height: 48px;
    padding: 0.75rem 0.85rem;
  }

  .nav-link:hover,
  .nav-link:focus,
  .nav-link.show {
    background: color-mix(in srgb, var(--yellow) 22%, var(--surface));
    border-color: color-mix(in srgb, var(--yellow) 50%, var(--line));
    color: var(--ink);
  }

  .portfolio-dropdown {
    background: var(--surface-2);
    background-color: var(--surface-2);
    border: 1px solid var(--line);
    box-shadow: none;
    margin: 0.2rem 0 0.55rem;
    min-width: 100%;
    position: static !important;
    transform: none !important;
    width: 100%;
  }

  [data-bs-theme="dark"] .nav-offcanvas {
    box-shadow: -24px 0 60px rgba(0, 0, 0, 0.55);
  }

  [data-bs-theme="dark"] .nav-offcanvas .btn-close {
    background-color: color-mix(in srgb, var(--yellow) 82%, #fff);
    filter: none;
  }

  [data-bs-theme="dark"] .nav-offcanvas .offcanvas-body {
    background:
      linear-gradient(180deg, color-mix(in srgb, var(--blue) 16%, transparent), transparent 38%),
      var(--surface);
  }

  [data-bs-theme="dark"] .nav-link {
    background: color-mix(in srgb, var(--surface-2) 82%, #000);
    color: var(--ink);
  }

  [data-bs-theme="dark"] .nav-link:hover,
  [data-bs-theme="dark"] .nav-link:focus,
  [data-bs-theme="dark"] .nav-link.show {
    background: color-mix(in srgb, var(--yellow) 18%, var(--surface-2));
    color: var(--ink);
  }

  [data-bs-theme="dark"] .portfolio-dropdown {
    background: color-mix(in srgb, var(--surface-2) 86%, #000);
    background-color: color-mix(in srgb, var(--surface-2) 86%, #000);
  }

  .portfolio-dropdown .dropdown-item {
    min-height: 46px;
    white-space: normal;
  }

  .theme-toggle {
    justify-content: center;
    margin-top: auto;
    min-height: 48px;
    width: 100%;
  }

  .hero-overlay {
    background: linear-gradient(90deg, rgba(1, 13, 43, 0.96), rgba(3, 24, 75, 0.72));
  }

  .hero-section,
  .hero-row {
    min-height: 640px;
  }

  .hero-content .row {
    padding-top: 5rem !important;
  }

  .hero-metrics {
    gap: 1rem;
  }

  .hero-metrics div {
    flex: 1 1 170px;
  }

  .section-pad {
    padding: 4.5rem 0;
  }

  .project-hero {
    padding: 4rem 0 3.25rem;
  }

  .cert-grid,
  .project-gallery,
  .link-panel {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 575.98px) {
  .hero-section h1 {
    font-size: 2.18rem;
  }

  .hero-section,
  .hero-row {
    min-height: 620px;
  }

  .hero-copy {
    font-size: 1rem;
    margin: 1rem 0 1.35rem;
  }

  .section-pad {
    padding: 3.5rem 0;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .hero-metrics {
    margin-top: 1.4rem;
  }

  .hero-metrics div {
    min-width: 100%;
  }

  .project-card,
  .cert-item,
  .contact-form {
    padding: 1.15rem;
  }

  .project-actions {
    flex-direction: column;
  }

  .project-actions .btn,
  .cert-btn {
    width: 100%;
  }

  .project-hero h1 {
    font-size: 2.1rem;
  }

  .project-hero p:not(.eyebrow),
  .detail-copy p,
  .detail-list {
    font-size: 1rem;
  }

  .gallery-modal .modal-dialog {
    margin: 0.75rem;
  }

  .gallery-modal-image {
    max-height: 68vh;
  }

  .gallery-modal-placeholder {
    min-height: 260px;
  }
}