/* voxel.blue — single custom stylesheet.
 * Replaces Bootstrap 3 + Font Awesome + owl/masonry CSS entirely.
 * Layout: CSS grid (sidebar + content) ≥992px; off-canvas drawer below.
 */

/* ------------------------------------------------------------------ *
 * Fonts (self-hosted)
 * ------------------------------------------------------------------ */
@font-face {
  font-family: "Sarala";
  src: url("/fonts/Sarala-Regular.woff2") format("woff2"),
       url("/fonts/Sarala-Regular.woff") format("woff");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "gravitate_brknormal";
  src: url("/fonts/gravitat-webfont.woff2") format("woff2"),
       url("/fonts/gravitat-webfont.woff") format("woff");
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "gravitate_segments_brknormal";
  src: url("/fonts/graviseg-webfont.woff2") format("woff2"),
       url("/fonts/graviseg-webfont.woff") format("woff");
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}

/* ------------------------------------------------------------------ *
 * Tokens
 * ------------------------------------------------------------------ */
:root {
  --c-bg: #090c12;
  --c-panel: rgba(13, 18, 30, 0.88);
  --c-panel-2: rgba(26, 33, 50, 0.85);
  --c-fg: #d9e1f2;
  --c-muted: #93a1c0;
  --c-border: rgba(120, 150, 200, 0.22);
  /* Static fallbacks — while the voxel ball runs, voxel-ball.js drives
     these live from the bright end of the ball's morphing gradient. */
  --c-accent: #4aa8ff;
  --c-accent-soft: #7cc4ff;
  /* Iridescence trio — sibling identity with voxel.esq */
  --c-iri-1: #52f2a8;
  --c-iri-2: #38d6f5;
  --c-iri-3: #a78bfa;
  --font-body: "Sarala", Helvetica, Arial, sans-serif;
  --font-display: "gravitate_brknormal", "Sarala", sans-serif;
  --radius: 6px;
  --sidebar-w: 320px;
  --topbar-h: 52px;
}

/* ------------------------------------------------------------------ *
 * Base
 * ------------------------------------------------------------------ */
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  color-scheme: dark;
  scroll-behavior: smooth;
}
body {
  margin: 0;
  min-height: 100dvh;
  background: var(--c-bg);
  color: var(--c-fg);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  height: auto;
}
a {
  color: var(--c-accent);
  text-decoration: none;
  transition: color 150ms ease;
}
a:hover {
  color: var(--c-accent-soft);
}
:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 2px;
}
::selection {
  background: var(--c-accent);
  color: #04101f;
}

/* Fixed galaxy background */
#bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background: var(--c-bg) url("/images/bg.jpg") center / cover no-repeat;
}
#bg::after {
  /* subtle darkening + vignette so panels & text sit comfortably */
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(120% 100% at 50% 0%, rgba(9, 12, 18, 0.25) 30%, rgba(9, 12, 18, 0.72) 100%);
}

.skip-link {
  position: absolute;
  left: -9999px;
  z-index: 100;
  padding: 0.5rem 1rem;
  background: var(--c-accent);
  color: #04101f;
}
.skip-link:focus {
  left: 0.75rem;
  top: 0.75rem;
}

/* ------------------------------------------------------------------ *
 * Top bar (mobile/tablet <992px) — sticky, always-visible menu button
 * ------------------------------------------------------------------ */
.topbar {
  display: none;
}
@media (max-width: 991.98px) {
  .topbar {
    position: sticky;
    top: 0;
    z-index: 50;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    height: var(--topbar-h);
    padding: 0 0.9rem;
    background: rgba(9, 12, 18, 0.82);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--c-border);
  }
  .topbar-brand {
    font-family: "gravitate_segments_brknormal", var(--font-display);
    font-size: 1.15rem;
    letter-spacing: 0.08em;
    color: #1f83ff;
  }
  .topbar-brand:hover {
    color: var(--c-accent-soft);
  }
}
.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.8rem;
  font: inherit;
  font-family: var(--font-display);
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  color: var(--c-fg);
  background: var(--c-panel-2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color 150ms ease, color 150ms ease;
}
.nav-toggle:hover {
  color: var(--c-accent-soft);
  border-color: var(--c-accent);
}
.nav-toggle svg {
  width: 1.1em;
  height: 1.1em;
}

/* ------------------------------------------------------------------ *
 * Layout: sidebar + content
 * ------------------------------------------------------------------ */
.layout {
  display: grid;
  grid-template-columns: 1fr;
  min-height: 100dvh;
}
@media (min-width: 992px) {
  .layout {
    grid-template-columns: var(--sidebar-w) minmax(0, 1fr);
  }
}
.content {
  padding: 1.25rem;
  min-width: 0;
}
@media (min-width: 992px) {
  .content {
    padding: 2rem 2.25rem;
  }
}

/* ------------------------------------------------------------------ *
 * Sidebar — inline column ≥992px, off-canvas drawer below
 * ------------------------------------------------------------------ */
#sidebar {
  padding: 2rem 1.5rem;
  text-align: center;
}
@media (max-width: 991.98px) {
  #sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 70;
    width: min(84vw, 340px);
    overflow-y: auto;
    background: rgba(11, 15, 24, 0.97);
    border-right: 1px solid var(--c-border);
    transform: translateX(-102%);
    transition: transform 240ms cubic-bezier(0.3, 0.8, 0.3, 1);
  }
  #sidebar.open {
    transform: translateX(0);
    box-shadow: 0 0 60px rgba(0, 0, 0, 0.6);
  }
}
.backdrop {
  position: fixed;
  inset: 0;
  z-index: 60;
  background: rgba(4, 6, 10, 0.6);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
}
.backdrop[hidden] {
  display: none;
}

/* The voxel disco ball (fallback: avatar image until JS init succeeds) */
.voxel-ball {
  position: relative;
  width: min(240px, 70%);
  aspect-ratio: 1;
  margin: 0 auto 1.6rem;
}
/* The fallback img lives inside the home link — pin the LINK to the
   canvas box so placeholder and canvas have identical geometry. */
.voxel-ball > a,
.voxel-ball > canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.voxel-ball > a > img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.voxel-ball > a,
.voxel-ball > canvas {
  /* FULLY OPAQUE dark circle: some GPU/browser combos composite
     transparent WebGL pixels as white — leave them no window. The
     placeholder link gets the identical ground so the swap is seamless. */
  background: radial-gradient(circle at 50% 45%, #0e1424 0%, #06080f 72%);
  border-radius: 50%;
  overflow: hidden;
}
.voxel-ball > canvas {
  /* crossfaded in by voxel-ball.js after real frames are flowing */
  transition: opacity 400ms ease;
}
.voxel-ball > canvas[hidden],
.voxel-ball > a[hidden] {
  display: none;
}
.voxel-ball figcaption {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: 0.4rem;
}
.voxel-ball-hint {
  display: block;
  font-size: 0.62rem;
  font-family: var(--font-display);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-muted);
  background: none;
  border: 0;
  cursor: pointer;
  width: 100%;
  transition: color 150ms ease;
}
.voxel-ball-hint:hover {
  color: var(--c-accent-soft);
}
.voxel-ball-hint[hidden] {
  display: none;
}

/* Wordmark — THE brand. Font: gravitate_segments_brknormal, brand blue,
   and the original drifting shimmer: each letter pulses opacity at a
   slightly different duration (4.1–4.9s), so the phase wanders. */
.sidebar-heading {
  margin: 1rem 0 0.25rem;
  font-weight: normal;
  font-size: 28px;
  letter-spacing: 0.1em;
}
.sidebar-heading a {
  font-family: "gravitate_segments_brknormal", var(--font-display);
  display: inline-flex;
  color: #0072ff; /* fallback if background-clip:text is unsupported */
  filter: none;
  /* slow decay back to calm after a ball flash */
  transition: filter 900ms ease-out;
  /* keep a compositor layer warm so the first flash doesn't hitch */
  will-change: filter;
  /* space reserved: hover only colors it, so nothing below shifts */
  border-bottom: dotted 1px transparent;
}
.sidebar-heading a:hover {
  border-bottom-color: #2065a1;
}
/* Synced with the ball: voxel-ball.js sets .ball-flash + --flash-color
   on the wordmark itself (scoped — avoids a page-wide style recalc). */
.sidebar-heading a.ball-flash {
  filter: brightness(1.45) drop-shadow(0 0 10px var(--flash-color, #38d6f5));
  transition-duration: 100ms; /* fast attack */
}
/* Each letter carries its own gradient clip (an animated-opacity child
   creates a stacking context, which breaks clipping on the parent).
   Staggered negative delays phase-shift the gradient per letter, so the
   colors still flow spatially through the name. The original drifting
   opacity pulse (4.1–4.9s per letter) runs on top. */
.sidebar-heading .lt {
  display: inline-block;
  /* the ball's live gradient (voxel-ball.js drives --ball-g1/-g2);
     static blue fallbacks for no-JS/no-WebGL */
  background-image: linear-gradient(
    100deg,
    var(--ball-g1, #1d5fa8) 0%,
    var(--ball-g2, #7cb4e8) 50%,
    var(--ball-g1, #1d5fa8) 100%
  );
  background-size: 300% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation-name: pulse, brand-sheen;
  animation-duration: 4s, 14s;
  animation-timing-function: ease, linear;
  animation-iteration-count: infinite, infinite;
}
.sidebar-heading .lt:nth-child(1)  { animation-duration: 4.1s, 14s; animation-delay: 0s, 0s; }
.sidebar-heading .lt:nth-child(2)  { animation-duration: 4.2s, 14s; animation-delay: 0s, -0.5s; }
.sidebar-heading .lt:nth-child(3)  { animation-duration: 4.3s, 14s; animation-delay: 0s, -1s; }
.sidebar-heading .lt:nth-child(4)  { animation-duration: 4.4s, 14s; animation-delay: 0s, -1.5s; }
.sidebar-heading .lt:nth-child(5)  { animation-duration: 4.5s, 14s; animation-delay: 0s, -2s; }
.sidebar-heading .lt:nth-child(6)  { animation-duration: 4.6s, 14s; animation-delay: 0s, -2.5s; }
.sidebar-heading .lt:nth-child(7)  { animation-duration: 4.4s, 14s; animation-delay: 0s, -3s; }
.sidebar-heading .lt:nth-child(8)  { animation-duration: 4.3s, 14s; animation-delay: 0s, -3.5s; }
.sidebar-heading .lt:nth-child(9)  { animation-duration: 4.2s, 14s; animation-delay: 0s, -4s; }
.sidebar-heading .lt:nth-child(10) { animation-duration: 4.1s, 14s; animation-delay: 0s, -4.5s; }
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}
@keyframes brand-sheen {
  from {
    background-position: 0% 0;
  }
  to {
    background-position: -300% 0;
  }
}

.sidebar-box {
  margin-top: 1rem;
  padding: 1.25rem 1rem;
  background: var(--c-panel);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
}
.sidebar-p {
  margin: 0 0 0.75rem;
  color: var(--c-muted);
  font-size: 0.92rem;
}
.sidebar-menu {
  list-style: none;
  margin: 1rem 0;
  padding: 0;
  font-family: var(--font-display);
  font-size: 1.05rem;
}
.sidebar-menu > li {
  margin: 0.35rem 0;
}
.sidebar-menu a {
  color: var(--c-accent-soft);
}
.sidebar-menu a:hover,
.sidebar-menu li.active > a {
  color: var(--c-accent);
}

/* Tag cloud */
ul.mixcloud {
  list-style: none;
  margin: 0.5rem 0;
  padding: 0.25rem 0.5rem;
  font-family: var(--font-body);
  line-height: 1.3;
}
ul.mixcloud li {
  display: inline;
  margin: 0 0.2rem;
}
ul.mixcloud a {
  color: var(--c-muted);
}
ul.mixcloud a:hover {
  color: var(--c-accent);
}

/* Social icons */
.social {
  display: flex;
  justify-content: center;
  gap: 0.6rem;
  margin: 1rem 0 0.5rem;
}
.social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.2rem;
  height: 2.2rem;
  color: var(--c-muted);
  border: 1px solid var(--c-border);
  border-radius: 50%;
  transition: color 150ms ease, border-color 150ms ease, transform 150ms ease;
}
.social a:hover {
  color: var(--c-accent);
  border-color: var(--c-accent);
  transform: translateY(-2px);
}
.social svg {
  width: 1.05rem;
  height: 1.05rem;
}
.copyright {
  margin-top: 0.75rem;
  font-size: 0.75rem;
  color: var(--c-muted);
}

/* ------------------------------------------------------------------ *
 * Mix grid (home + tag pages) — CSS grid, no masonry, resize-safe
 * ------------------------------------------------------------------ */
.mix-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(235px, 1fr));
  gap: 1.1rem;
}
.mix-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--c-panel);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}
.mix-card:hover {
  transform: translateY(-3px);
  border-color: var(--c-iri-2);
  box-shadow: 0 6px 24px rgba(56, 214, 245, 0.12);
}
.mix-card-cover {
  display: block;
  aspect-ratio: 1;
  overflow: hidden;
}
.mix-card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  /* blurred tiny placeholder is set inline as background-image */
  background-size: cover;
  background-position: center;
  transition: transform 300ms ease;
}
.mix-card:hover .mix-card-cover img {
  transform: scale(1.04);
}
.mix-card-text {
  padding: 0.8rem 0.9rem 0.9rem;
}
.mix-card-text h4 {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-weight: normal;
  font-size: 1.02rem;
  line-height: 1.35;
}
/* Card titles: same ball gradient, gentler (soft two-tone) and static —
   animating 29 backgrounds would cost real paint time every frame. */
.mix-card-text h4 a {
  background-image: linear-gradient(
    100deg,
    var(--ball-g2, #7cb4e8) 0%,
    var(--ball-g1, #1d5fa8) 100%
  );
  background-size: 100% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.mix-card:hover .mix-card-text h4 a {
  filter: brightness(1.35);
}
.mix-tags {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.55rem;
  font-size: 0.72rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
.mix-tags a {
  color: var(--c-accent-soft);
  opacity: 0.9;
}
.mix-tags a:hover {
  color: var(--c-accent);
  opacity: 1;
}

/* ------------------------------------------------------------------ *
 * Content pages (about, contact, dates, single mix)
 * ------------------------------------------------------------------ */
.content-panel {
  max-width: 46rem;
  padding: 1.5rem 1.6rem;
  background: var(--c-panel);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
}
.content-panel h1,
.content-panel h2,
.content-panel h3 {
  font-family: var(--font-display);
  font-weight: normal;
  line-height: 1.3;
  margin: 1.4em 0 0.5em;
}
.content-panel h1 {
  margin-top: 0;
  font-size: 1.9rem;
}
/* Page & mix titles wear the ball's live gradient (see .lt above). */
.content-panel h1,
.tag-heading {
  background-image: linear-gradient(
    100deg,
    var(--ball-g1, #1d5fa8) 0%,
    var(--ball-g2, #7cb4e8) 50%,
    var(--ball-g1, #1d5fa8) 100%
  );
  background-size: 300% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: brand-sheen 14s linear infinite;
}
.content-panel h2 {
  font-size: 1.4rem;
  color: var(--c-accent-soft);
}
.content-panel img {
  border-radius: var(--radius);
  border: 1px solid var(--c-border);
}
.content-panel img[src*="#center"] {
  display: block;
  margin: 1rem auto;
}
.content-panel ul {
  padding-left: 1.3em;
}
.content-panel blockquote {
  margin: 1em 0;
  padding-left: 1em;
  border-left: 2px solid var(--c-accent);
  color: var(--c-muted);
}

/* Single mix page: embed */
.mix.embed img {
  display: block;
  width: 100%;
  border-radius: var(--radius) var(--radius) 0 0;
  border: 1px solid var(--c-border);
  border-bottom: 0;
}
.mix.embed iframe {
  display: block;
  border: 1px solid var(--c-border);
  border-radius: 0 0 var(--radius) var(--radius);
}

/* ------------------------------------------------------------------ *
 * Dates / events
 * ------------------------------------------------------------------ */
.event {
  padding: 0.55rem 0.6rem;
  border-radius: var(--radius);
}
.event:nth-child(even) {
  background: rgba(209, 209, 209, 0.05);
}
.event .date {
  display: inline-block;
  width: 12em;
  font-family: var(--font-display);
  font-size: 0.92rem;
  color: var(--c-iri-2);
}
.event.past .date {
  color: var(--c-muted);
}
.event .name {
  display: inline-block;
  font-size: 1.05rem;
}
.event .name a {
  color: var(--c-accent-soft);
}
.event .cancelnotify {
  display: inline-block;
}
.event .location {
  float: right;
  color: var(--c-muted);
  font-size: 0.9rem;
}
@media (max-width: 640px) {
  .event .date {
    display: block;
    width: auto;
  }
  .event .location {
    float: none;
    display: block;
  }
}
.event .canceled {
  text-decoration: line-through;
  opacity: 0.6;
}
.event .cancelnotify {
  color: #ff7a45;
  font-size: 0.85rem;
}
.event .floordesc {
  display: inline;
  color: var(--c-muted);
}
ul.floors,
ul.recordings,
ul.teaser {
  display: inline;
  list-style: none;
  padding: 0;
}
ul.floors li,
ul.recordings li,
ul.teaser li {
  display: inline;
  margin-right: 0.5rem;
}
.event .description {
  font-size: 0.92rem;
  color: var(--c-muted);
}

/* ------------------------------------------------------------------ *
 * Forms & buttons
 * ------------------------------------------------------------------ */
.form-group {
  margin-bottom: 0.9rem;
  text-align: left;
}
.form-group label {
  display: block;
  margin-bottom: 0.25rem;
  font-size: 0.88rem;
  color: var(--c-muted);
}
.form-control {
  width: 100%;
  padding: 0.55rem 0.7rem;
  font: inherit;
  color: var(--c-fg);
  background: rgba(9, 12, 18, 0.6);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
}
.form-control:focus {
  outline: none;
  border-color: var(--c-accent);
}
.btn {
  display: inline-block;
  padding: 0.5rem 1.3rem;
  font-family: var(--font-display);
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  color: var(--c-fg);
  background: var(--c-panel-2);
  border: 1px solid var(--c-accent);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 150ms ease, color 150ms ease;
}
.btn:hover {
  background: var(--c-accent);
  color: #04101f;
}

/* ------------------------------------------------------------------ *
 * Lightbox (native <dialog>)
 * ------------------------------------------------------------------ */
dialog.lightbox {
  padding: 0;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  background: var(--c-bg);
  max-width: min(92vw, 1100px);
}
dialog.lightbox::backdrop {
  background: rgba(4, 6, 10, 0.8);
  backdrop-filter: blur(3px);
}
dialog.lightbox img {
  display: block;
  max-width: 100%;
  max-height: 88vh;
}

/* ------------------------------------------------------------------ *
 * 404 & misc
 * ------------------------------------------------------------------ */
.notfound {
  margin: 4rem auto;
  text-align: center;
}
.tag-heading {
  margin: 0.25rem 0 1.25rem;
  font-family: var(--font-display);
  font-weight: normal;
  font-size: 1.7rem;
}
.inline-icon {
  width: 1em;
  height: 1em;
  vertical-align: -0.15em;
}

/* ------------------------------------------------------------------ *
 * Reduced motion
 * ------------------------------------------------------------------ */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .sidebar-heading .lt {
    animation: none !important;
  }
  .sidebar-heading a,
  .content-panel h1,
  .tag-heading {
    animation: none;
  }
  #sidebar {
    transition: none;
  }
  .mix-card,
  .mix-card-cover img,
  .social a {
    transition: none;
  }
}