/* ==========================================================================
   atwill.com — underground/graffiti theme
   Dark brick-wall surfaces + rainbow spray-paint brand moments.
   ========================================================================== */

@font-face {
  font-family: "Bungee";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/lib/fonts/bungee-400.woff2") format("woff2");
}

@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/lib/fonts/ibm-plex-mono-400.woff2") format("woff2");
}

@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("/lib/fonts/ibm-plex-mono-500.woff2") format("woff2");
}

@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("/lib/fonts/ibm-plex-mono-600.woff2") format("woff2");
}

@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("/lib/fonts/ibm-plex-mono-700.woff2") format("woff2");
}

:root {
  /* -- surfaces -- */
  --ink: #0a0910;
  --ink-2: #100e18;
  --surface: #17141f;
  --surface-2: #1e1a29;
  --surface-3: #262032;
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.16);

  /* -- text -- */
  --paper: #f3efe6;
  --muted: #a89bc4;
  --muted-2: #756a91;

  /* -- spray paint palette (lifted from the logo) -- */
  --spray-pink: #ff2f7e;
  --spray-magenta: #ef37ff;
  --spray-orange: #ff8a1f;
  --spray-yellow: #ffd23f;
  --spray-acid: #b6ff3c;
  --spray-mint: #2be89a;
  --spray-cyan: #2fd1ff;
  --spray-blue: #4f7dff;
  --spray-purple: #a748ff;

  --graffiti-gradient: linear-gradient(
    92deg,
    var(--spray-pink) 0%,
    var(--spray-orange) 22%,
    var(--spray-yellow) 38%,
    var(--spray-acid) 50%,
    var(--spray-mint) 62%,
    var(--spray-cyan) 76%,
    var(--spray-purple) 100%
  );

  --font-display: "Bungee", "Arial Black", sans-serif;
  --font-body: "IBM Plex Mono", "Consolas", monospace;

  --radius: 0.5rem;
  --shadow-drip: 0 10px 30px -12px rgba(255, 47, 126, 0.35), 0 4px 14px -6px rgba(47, 209, 255, 0.25);
}

/* ==========================================================================
   Base
   ========================================================================== */

html {
  font-size: 14px;
  position: relative;
  min-height: 100%;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

body {
  margin-bottom: 0;
  font-family: var(--font-body);
  color: var(--paper);
  background-color: var(--ink);
  background-image:
    radial-gradient(560px circle at -5% -10%, rgba(255, 47, 126, 0.24), transparent 60%),
    radial-gradient(620px circle at 108% -8%, rgba(47, 209, 255, 0.22), transparent 60%),
    radial-gradient(680px circle at -8% 108%, rgba(255, 138, 31, 0.16), transparent 60%),
    radial-gradient(680px circle at 108% 108%, rgba(167, 72, 255, 0.2), transparent 60%),
    repeating-linear-gradient(
      0deg,
      rgba(255, 255, 255, 0.025) 0,
      rgba(255, 255, 255, 0.025) 1px,
      transparent 1px,
      transparent 42px
    ),
    repeating-linear-gradient(
      90deg,
      rgba(255, 255, 255, 0.02) 0,
      rgba(255, 255, 255, 0.02) 1px,
      transparent 1px,
      transparent 84px
    );
  background-attachment: fixed;
  min-height: 100vh;
}

::selection {
  background: var(--spray-magenta);
  color: #16031a;
}

a {
  color: var(--spray-cyan);
}

a:hover {
  color: var(--spray-pink);
}

h1, h2, h3, .h1, .h2, .h3 {
  font-family: var(--font-display);
  letter-spacing: 0.01em;
  text-transform: uppercase;
  font-weight: 400;
}

h1, .h1 {
  background: var(--graffiti-gradient);
  background-size: 220% auto;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 3px 0 rgba(0, 0, 0, 0.55));
  display: inline-block;
  padding-bottom: 0.1em;
  animation: hue-drift 14s linear infinite;
}

h2, .h2 {
  color: var(--paper);
  font-size: 1.3rem;
  border-left: 5px solid var(--spray-acid);
  padding-left: 0.6rem;
}

@keyframes hue-drift {
  0% { background-position: 0% 50%; }
  100% { background-position: 220% 50%; }
}

/* ==========================================================================
   Navbar / brand
   ========================================================================== */

.navbar {
  background: linear-gradient(180deg, var(--ink-2), var(--ink) 85%) !important;
  border-bottom: 1px solid var(--line-strong);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.03), 0 12px 24px -18px rgba(255, 47, 126, 0.4);
  position: relative;
}

.navbar::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -3px;
  height: 3px;
  background: var(--graffiti-gradient);
  background-size: 220% auto;
  animation: hue-drift 14s linear infinite;
  opacity: 0.9;
}

.navbar-logo {
  width: 32px;
  height: 32px;
  border-radius: 6px;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0;
  font-family: var(--font-display);
  font-size: 1.3rem;
  text-transform: uppercase;
  background: var(--graffiti-gradient);
  background-size: 220% auto;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent !important;
  animation: hue-drift 14s linear infinite;
}

.navbar .nav-link {
  color: var(--muted) !important;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  position: relative;
  padding-bottom: 0.35rem !important;
  transition: color 0.15s ease;
}

.navbar .nav-link::after {
  content: "";
  position: absolute;
  left: 0.5rem;
  right: 0.5rem;
  bottom: 0;
  height: 3px;
  border-radius: 2px;
  background: var(--graffiti-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.22s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.navbar .nav-link:hover,
.navbar .nav-link.active {
  color: var(--paper) !important;
}

.navbar .nav-link:hover::after,
.navbar .nav-link.active::after {
  transform: scaleX(1);
}

.navbar-toggler {
  border-color: var(--line-strong);
}

@media (max-width: 575.98px) {
  .navbar-collapse {
    background: var(--surface);
    border: 1px solid var(--line-strong);
    border-radius: 10px;
    margin-top: 0.75rem;
    padding: 0.25rem 1rem;
    box-shadow: 0 16px 32px -20px rgba(0, 0, 0, 0.6);
  }

  .navbar-collapse .nav-item {
    border-bottom: 1px solid var(--line);
  }

  .navbar-collapse .nav-item:last-child {
    border-bottom: none;
  }

  .navbar-collapse .nav-link {
    padding: 0.85rem 0.25rem !important;
  }

  .navbar-collapse .nav-link::after {
    display: none;
  }

  .navbar-collapse .nav-link:hover,
  .navbar-collapse .nav-link:focus-visible {
    background: rgba(255, 255, 255, 0.04);
    border-radius: 6px;
  }
}

/* ==========================================================================
   Footer
   ========================================================================== */

footer.footer {
  background: var(--ink-2);
  border-top: 1px solid var(--line);
  color: var(--muted-2);
  font-size: 0.78rem;
  padding: 1.25rem 0;
  margin-top: 3rem;
}

footer.footer a {
  color: var(--muted);
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  padding: 3rem 0 2rem;
  text-align: center;
}

.hero-art {
  max-width: 560px;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow-drip);
  margin: 0 auto 2rem;
  display: block;
}

.hero h1 {
  font-size: 3rem;
}

.hero-tagline {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 640px;
  margin: 0 auto 1.5rem;
  line-height: 1.6;
}

/* ==========================================================================
   Cards / panels
   ========================================================================== */

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-drip);
  position: relative;
  overflow: hidden;
  height: 100%;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--graffiti-gradient);
  background-size: 220% auto;
}

.card-title {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.01em;
  font-size: 1.15rem;
  color: var(--paper);
}

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

.card-footer {
  background: var(--surface-2);
  border-top: 1px solid var(--line);
}

.tag-pill {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--spray-acid);
  border: 1px solid rgba(182, 255, 60, 0.35);
  background: rgba(182, 255, 60, 0.08);
  border-radius: 999px;
  padding: 0.2rem 0.65rem;
  margin: 0 0.3rem 0.3rem 0;
}

/* ==========================================================================
   Blog post content (rendered markdown)
   ========================================================================== */

.blog-post-content {
  line-height: 1.7;
}

.blog-post-content pre {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem;
  overflow-x: auto;
}

.blog-post-content code {
  color: var(--spray-acid);
}

.blog-post-content pre code {
  color: var(--paper);
}

.blog-post-content ul,
.blog-post-content ol {
  padding-left: 1.5rem;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  font-family: var(--font-body);
  font-weight: 600;
  letter-spacing: 0.03em;
  border-radius: var(--radius);
}

.btn-primary {
  background: linear-gradient(120deg, var(--spray-pink), var(--spray-purple));
  border: none;
  box-shadow: 0 6px 16px -6px rgba(255, 47, 126, 0.55);
}

.btn-primary:hover, .btn-primary:focus {
  background: linear-gradient(120deg, var(--spray-magenta), var(--spray-blue));
  box-shadow: 0 8px 20px -6px rgba(239, 55, 255, 0.6);
}

.btn-outline-secondary {
  color: var(--muted);
  border-color: var(--line-strong);
}

.btn-outline-secondary:hover {
  background: var(--surface-3);
  border-color: var(--spray-cyan);
  color: var(--paper);
}

.btn:focus, .btn:active:focus {
  box-shadow: 0 0 0 0.15rem var(--ink), 0 0 0 0.3rem var(--spray-cyan);
}

/* ==========================================================================
   Social links
   ========================================================================== */

.social-links {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.social-links .btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.social-links svg {
  width: 1.1rem;
  height: 1.1rem;
  fill: currentColor;
}

/* ==========================================================================
   Misc
   ========================================================================== */

.text-muted { color: var(--muted-2) !important; }

.section-heading {
  text-align: center;
  margin: 3rem 0 2rem;
}

::-webkit-scrollbar { width: 12px; height: 12px; }
::-webkit-scrollbar-track { background: var(--ink); }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--spray-pink), var(--spray-cyan));
  border-radius: 8px;
  border: 2px solid var(--ink);
}