/* ==========================================================================
   Design tokens
   Change colors and fonts here; everything else reads from these variables.
   ========================================================================== */
:root {
  --c-bg: #0a0a0b;
  --c-surface: #131316;
  --c-surface-2: #1b1b20;
  --c-border: #26262d;
  --c-text: #ededf0;
  --c-muted: #8d8d97;
  --c-accent: #ff6a2b;
  --c-accent-rgb: 255, 106, 43;
  --c-on-accent: #160800;

  --font-sans: "Archivo", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;

  --nav-height: 68px;
  --radius: 6px;
  --grid-size: 28px;
}

/* Map our tokens onto Bootstrap's own variables */
:root[data-bs-theme="dark"] {
  --bs-body-bg: var(--c-bg);
  --bs-body-color: var(--c-text);
  --bs-body-font-family: var(--font-sans);
  --bs-secondary-color: var(--c-muted);
  --bs-border-color: var(--c-border);
  --bs-link-color: var(--c-accent);
  --bs-link-color-rgb: var(--c-accent-rgb);
  --bs-link-hover-color: var(--c-text);
  --bs-link-hover-color-rgb: 237, 237, 240;
  --bs-emphasis-color: #fff;
}

/* ==========================================================================
   Base
   ========================================================================== */
/* Headings use the expanded width of Archivo */
h1, h2, h3, h4, h5, h6,
.navbar-brand {
  font-stretch: 125%;
  font-weight: 800;
  letter-spacing: -0.01em;
}

::selection {
  background: rgba(var(--c-accent-rgb), 0.35);
}

/* Fixed dot grid behind the whole page; js/main.js moves it slower than the content on scroll */
.bg-grid {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: calc(100vh + var(--grid-size));
  z-index: -1;
  background-image: radial-gradient(circle, rgba(255, 255, 255, 0.08) 1px, transparent 1.5px);
  background-size: var(--grid-size) var(--grid-size);
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, #000 30%, transparent 100%);
  pointer-events: none;
  will-change: transform;
}

@media (prefers-reduced-motion: reduce) {
  .hero-photo::before,
  .hero-glow::before {
    animation: none;
  }
}

section[id],
header[id] {
  scroll-margin-top: var(--nav-height);
}

.section {
  padding-block: 6rem;
}

.text-muted-soft {
  color: var(--c-muted);
}

/* Small uppercase monospace label, e.g. "■ LEVEL 01" */
.label {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--c-muted);
  margin-bottom: 0.75rem;
}

.label::before {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  background: var(--c-accent);
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  font-weight: 700;
  border-radius: var(--radius);
  padding: 0.7rem 1.3rem;
}

.btn-accent {
  --bs-btn-bg: var(--c-accent);
  --bs-btn-border-color: var(--c-accent);
  --bs-btn-color: var(--c-on-accent);
  --bs-btn-hover-bg: #ff8a57;
  --bs-btn-hover-border-color: #ff8a57;
  --bs-btn-hover-color: var(--c-on-accent);
  --bs-btn-active-bg: #e8561a;
  --bs-btn-active-border-color: #e8561a;
  --bs-btn-active-color: var(--c-on-accent);
}

.btn-ghost {
  --bs-btn-color: var(--c-text);
  --bs-btn-border-color: var(--c-border);
  --bs-btn-hover-bg: var(--c-surface-2);
  --bs-btn-hover-border-color: var(--c-muted);
  --bs-btn-hover-color: #fff;
  --bs-btn-active-bg: var(--c-surface-2);
  --bs-btn-active-border-color: var(--c-muted);
}

/* ==========================================================================
   Navbar
   ========================================================================== */
.site-nav {
  min-height: var(--nav-height);
}

/* The blurred bar background lives in a pseudo-element: a backdrop-filter on .site-nav itself
   would trap the fixed side panel inside the 68px bar */
.site-nav::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgba(10, 10, 11, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s, background-color 0.2s;
}

.site-nav.is-scrolled::before {
  background: rgba(10, 10, 11, 0.92);
  border-bottom-color: var(--c-border);
}

.site-nav .navbar-brand {
  position: relative;
  z-index: 1046; /* stays sharp above the menu backdrop */
  font-size: 1rem;
  text-transform: uppercase;
}

.site-nav .navbar-brand span {
  color: var(--c-accent);
}

.site-nav .nav-link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--c-muted);
}

.site-nav .nav-link:hover,
.site-nav .nav-link:focus {
  color: var(--c-text);
}

.site-nav .btn {
  padding: 0.4rem 0.9rem;
  font-size: 0.85rem;
}

/* Hamburger button: three bars that turn into an X.
   Opening: the bars slide to the middle, then rotate. Closing: the same in reverse. */
.menu-toggle {
  position: relative;
  z-index: 1046; /* above the side panel and its backdrop */
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
}

.menu-toggle:focus {
  box-shadow: none;
}

.menu-toggle:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 2px;
}

.menu-toggle-bar {
  position: absolute;
  left: 11px;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--c-text);
  transition: top 0.18s ease 0.18s, transform 0.18s ease, opacity 0.1s ease 0.18s;
}

.menu-toggle-bar:nth-child(1) { top: 14px; }
.menu-toggle-bar:nth-child(2) { top: 20px; }
.menu-toggle-bar:nth-child(3) { top: 26px; }

.menu-toggle[aria-expanded="true"] .menu-toggle-bar {
  top: 20px;
  transition: top 0.18s ease, transform 0.18s ease 0.18s, opacity 0.1s ease;
}

.menu-toggle[aria-expanded="true"] .menu-toggle-bar:nth-child(1) { transform: rotate(45deg); }
.menu-toggle[aria-expanded="true"] .menu-toggle-bar:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] .menu-toggle-bar:nth-child(3) { transform: rotate(-45deg); }

/* Blurred backdrop behind the side panel (Bootstrap adds it next to the panel when the menu opens) */
.offcanvas-backdrop {
  background-color: rgba(10, 10, 11, 0.45);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: opacity 0.4s ease;
}

.offcanvas-backdrop.show {
  opacity: 1;
}

/* Mobile side panel. From md up Bootstrap turns it back into the inline navbar links */
@media (max-width: 767.98px) {
  .site-nav .offcanvas {
    --bs-offcanvas-width: min(80vw, 320px);
    --bs-offcanvas-bg: var(--c-surface);
    --bs-offcanvas-border-color: var(--c-border);
    --bs-offcanvas-transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1);
    padding-top: var(--nav-height);
  }

  .site-nav .offcanvas-body {
    padding: 2rem 1.5rem;
  }

  .site-nav .offcanvas .nav-link {
    padding-block: 0.6rem;
    font-family: var(--font-sans);
    font-size: 1.75rem;
    font-weight: 800;
    font-stretch: 125%;
    letter-spacing: 0;
    color: var(--c-text);
  }

  .site-nav .offcanvas .nav-link:hover,
  .site-nav .offcanvas .nav-link:focus-visible {
    color: var(--c-accent);
  }

  .site-nav .offcanvas .btn {
    width: 100%;
    margin-top: 1.5rem;
    padding: 0.8rem;
    font-size: 1rem;
  }

  /* Links slide in one after another while the panel opens */
  .site-nav .offcanvas .nav-item {
    opacity: 0;
    transform: translateX(24px);
    transition: opacity 0.25s ease, transform 0.25s ease;
  }

  .site-nav .offcanvas.showing .nav-item,
  .site-nav .offcanvas.show:not(.hiding) .nav-item {
    opacity: 1;
    transform: none;
    transition: opacity 0.4s ease, transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
  }

  .site-nav .offcanvas.showing .nav-item:nth-child(2),
  .site-nav .offcanvas.show:not(.hiding) .nav-item:nth-child(2) { transition-delay: 0.05s; }
  .site-nav .offcanvas.showing .nav-item:nth-child(3),
  .site-nav .offcanvas.show:not(.hiding) .nav-item:nth-child(3) { transition-delay: 0.1s; }
  .site-nav .offcanvas.showing .nav-item:nth-child(4),
  .site-nav .offcanvas.show:not(.hiding) .nav-item:nth-child(4) { transition-delay: 0.15s; }
}

@media (prefers-reduced-motion: reduce) {
  .menu-toggle-bar,
  .site-nav .offcanvas .nav-item,
  .offcanvas-backdrop {
    transition: none !important;
  }
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: calc(var(--nav-height) + 1.5rem);
  padding-bottom: 4.5rem;
}

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

/* Round photo next to the name, with a slowly rotating dashed ring */
.hero-photo {
  position: relative;
  display: inline-block;
  width: clamp(140px, 22vw, 300px);
  aspect-ratio: 1;
  margin: 14px; /* room for the dashed ring */
  padding: 8px;
  border-radius: 50%;
  border: 1px solid var(--c-border);
  background: rgba(19, 19, 22, 0.6);
}

.hero-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}

.hero-photo::before {
  content: "";
  position: absolute;
  inset: -14px;
  border-radius: 50%;
  border: 1px dashed rgba(var(--c-accent-rgb), 0.35);
  animation: spin 60s linear infinite;
}

/* Soft accent glow behind the photo: drifts slowly, and lags behind on scroll (js/main.js).
   .hero-bg clips it to the hero so it never causes horizontal scroll. */
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

.hero-glow {
  position: absolute;
  left: 78%;
  top: 45%;
  width: 70vw;
  height: 70vw;
  margin: -35vw 0 0 -35vw;
  will-change: transform;
}

.hero-glow::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(var(--c-accent-rgb), 0.16) 0%, rgba(var(--c-accent-rgb), 0.05) 35%, transparent 65%);
  animation: glow-drift 18s ease-in-out infinite alternate;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes glow-drift {
  from { transform: translate(6%, -8%) scale(1); }
  to { transform: translate(-6%, 4%) scale(1.15); }
}

.hero-name {
  font-size: clamp(2.5rem, 6.25vw, 5.25rem);
  line-height: 1;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.hero-name span {
  display: inline-block;
}

.hero-name .accent {
  color: var(--c-accent);
}

.hero-intro {
  max-width: 36rem;
  font-size: 1.15rem;
  line-height: 1.6;
  color: var(--c-muted);
  margin-bottom: 1.5rem;
}

.hero-intro strong {
  color: var(--c-text);
  font-weight: 600;
}

.scroll-cue {
  position: absolute;
  z-index: 1;
  left: 50%;
  bottom: 1.5rem;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--c-muted);
  text-decoration: none;
}

.scroll-cue:hover {
  color: var(--c-accent);
}

/* ==========================================================================
   Tags
   ========================================================================== */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
  color: var(--c-text);
  background: var(--c-surface-2);
  border: 1px solid var(--c-border);
}

/* ==========================================================================
   Level select (project list on the home page)
   ========================================================================== */
.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2rem;
}

.section-head h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin: 0;
}

.section-head .count {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--c-muted);
}

/* Tag filter buttons: label + number of projects with that tag */
.level-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.filter-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.4rem 0.35rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--c-muted);
  background: transparent;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  transition: color 0.15s, border-color 0.15s;
}

.filter-btn:hover {
  color: var(--c-text);
  border-color: var(--c-muted);
}

.filter-count {
  min-width: 1.4rem;
  padding: 0.05rem 0.35rem;
  font-size: 0.7rem;
  text-align: center;
  color: var(--c-text);
  background: var(--c-surface-2);
  border-radius: 4px;
}

.filter-btn[aria-pressed="true"] {
  color: var(--c-text);
  border-color: var(--c-accent);
}

.filter-btn[aria-pressed="true"] .filter-count {
  color: var(--c-on-accent);
  background: var(--c-accent);
}

.level {
  border-top: 1px solid var(--c-border);
  padding-block: 3rem;
}

.level-link {
  color: inherit;
  text-decoration: none;
}

.level-link:hover,
.level-link:focus-visible {
  color: inherit;
}

.level-media {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--c-surface);
  outline: 2px solid transparent;
  outline-offset: 6px;
  transition: outline-color 0.2s;
}

.level-media img,
.level-media video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 0.3s, transform 0.6s;
}

.level-media video {
  opacity: 0;
}

.level-media.is-playing video {
  opacity: 1;
}

.level-link:hover .level-media,
.level-link:focus-visible .level-media {
  outline-color: var(--c-accent);
}

.level-link:hover .level-media img {
  transform: scale(1.03);
}

.level-media .preview-badge {
  position: absolute;
  left: 0.75rem;
  bottom: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  background: rgba(10, 10, 11, 0.75);
  color: var(--c-text);
  transition: opacity 0.2s;
}

.level-media.is-playing .preview-badge {
  opacity: 0;
}

.level-title {
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  line-height: 1.05;
  margin-bottom: 0.75rem;
  transition: color 0.2s;
}

.level-link:hover .level-title {
  color: var(--c-accent);
}

.level-summary {
  color: var(--c-muted);
  font-size: 1.05rem;
  margin-bottom: 1.5rem;
}

.level-specs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem 1.5rem;
  margin-bottom: 1.5rem;
}

.level-specs dt,
.spec-strip dt,
.skills dt {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-muted);
  margin-bottom: 0.2rem;
}

.level-specs dd {
  margin: 0;
  font-weight: 500;
}

.level-cta {
  display: inline-block;
  margin-top: 1.75rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-accent);
}

.level-cta .arrow {
  display: inline-block;
  transition: transform 0.2s;
}

.level-link:hover .level-cta .arrow {
  transform: translateX(4px);
}

/* ==========================================================================
   About
   ========================================================================== */
.about-text p {
  font-size: 1.1rem;
  line-height: 1.7;
  color: #c9c9cf;
}

.skills {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1.5rem;
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--c-border);
}

.skills dd {
  margin: 0;
  line-height: 1.8;
}

/* ==========================================================================
   Contact + footer
   ========================================================================== */
.contact-email {
  display: inline-block;
  font-size: clamp(1.5rem, 5vw, 3.5rem);
  font-weight: 800;
  font-stretch: 125%;
  color: var(--c-text);
  text-decoration: none;
  border-bottom: 3px solid var(--c-accent);
  word-break: break-all;
}

.contact-email:hover {
  color: var(--c-accent);
}

.social-links a {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--c-muted);
  text-decoration: none;
}

.social-links a:hover {
  color: var(--c-accent);
}

.site-footer {
  border-top: 1px solid var(--c-border);
  padding-block: 2rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--c-muted);
}

/* ==========================================================================
   Project page
   ========================================================================== */
.project-header {
  padding-top: calc(var(--nav-height) + 3rem);
  padding-bottom: 2.5rem;
}

.project-header h1 {
  font-size: clamp(2.25rem, 6vw, 4.5rem);
  line-height: 1;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.back-link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-muted);
  text-decoration: none;
  margin-bottom: 2rem;
}

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

.project-media {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--c-surface);
}

.project-media img,
.project-media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Horizontal row of specs under the main media */
.spec-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  margin: 0;
}

.spec-strip > div {
  padding: 1rem 1.25rem;
  border-right: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
  margin-right: -1px;
  margin-bottom: -1px;
}

.spec-strip dd {
  margin: 0;
  font-weight: 600;
}

.prose {
  max-width: 44rem;
}

.prose h2 {
  font-size: 1.5rem;
  margin-top: 3.5rem;
  margin-bottom: 1rem;
}

.prose h2:first-child {
  margin-top: 0;
}

.prose p,
.prose li {
  color: #c9c9cf;
  font-size: 1.05rem;
  line-height: 1.75;
}

.prose pre {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.gallery img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius);
}

.next-level {
  border-top: 1px solid var(--c-border);
  padding-block: 4rem;
}

.next-level-link {
  display: block;
  color: var(--c-text);
  text-decoration: none;
}

.next-level-title {
  display: block;
  font-size: clamp(1.75rem, 5vw, 3.5rem);
  font-weight: 800;
  font-stretch: 125%;
  text-transform: uppercase;
  line-height: 1.05;
  transition: color 0.2s;
}

.next-level-link:hover .next-level-title {
  color: var(--c-accent);
}