/*
 * Liquid glass design layer
 * Loaded after the legacy theme so surfaces, depth and motion stay centralized.
 */

:root {
  --bg: #eaf3f8;
  --surface: rgba(255, 255, 255, 0.46);
  --surface-alt: rgba(236, 246, 251, 0.54);
  --text: #18303d;
  --text-muted: #5e7480;
  --border: rgba(117, 158, 178, 0.28);
  --divider: rgba(92, 139, 162, 0.24);
  --link: #176d86;
  --link-hover: #0c5068;
  --nav-bg: rgba(244, 251, 255, 0.58);
  --footer-bg: rgba(232, 244, 250, 0.52);
  --footer-text: #284451;
  --glass-fill: rgba(255, 255, 255, 0.34);
  --glass-fill-strong: rgba(255, 255, 255, 0.58);
  --glass-fill-soft: rgba(255, 255, 255, 0.2);
  --glass-stroke: rgba(255, 255, 255, 0.72);
  --glass-stroke-soft: rgba(118, 165, 187, 0.26);
  --glass-highlight: rgba(255, 255, 255, 0.86);
  --glass-shadow: 0 18px 50px rgba(37, 82, 104, 0.14);
  --glass-shadow-hover: 0 24px 58px rgba(31, 82, 108, 0.2);
  --glass-inset: inset 0 1px 0 rgba(255, 255, 255, 0.82), inset 0 -1px 0 rgba(118, 160, 180, 0.1);
  --glass-blur: 24px;
  --glass-radius: 22px;
  --glass-radius-small: 14px;
  --liquid-cyan: #76d7e8;
  --liquid-blue: #77a9f4;
  --liquid-violet: #b99aef;
  --liquid-rose: #f2a9c5;
  --paper-grain: rgba(255, 255, 255, 0.018);
  --paper-fiber: rgba(255, 255, 255, 0.028);
  --paper-edge: rgba(114, 164, 187, 0.16);
  --paper-lift-shadow: var(--glass-shadow);
  --paper-lift-shadow-strong: var(--glass-shadow-hover);
}

html[data-theme="dark"] {
  --bg: #07121e;
  --surface: rgba(20, 36, 52, 0.5);
  --surface-alt: rgba(27, 47, 65, 0.5);
  --text: #e7f4fb;
  --text-muted: #9bb1c1;
  --border: rgba(133, 190, 215, 0.22);
  --divider: rgba(128, 188, 214, 0.2);
  --link: #83d8e7;
  --link-hover: #c1f2f8;
  --nav-bg: rgba(7, 19, 31, 0.62);
  --footer-bg: rgba(8, 21, 34, 0.62);
  --footer-text: #d2e5ee;
  --glass-fill: rgba(22, 40, 58, 0.38);
  --glass-fill-strong: rgba(29, 51, 71, 0.56);
  --glass-fill-soft: rgba(35, 59, 78, 0.22);
  --glass-stroke: rgba(163, 218, 238, 0.26);
  --glass-stroke-soft: rgba(120, 183, 211, 0.18);
  --glass-highlight: rgba(203, 238, 250, 0.34);
  --glass-shadow: 0 22px 58px rgba(0, 5, 12, 0.42);
  --glass-shadow-hover: 0 28px 68px rgba(0, 4, 12, 0.56);
  --glass-inset: inset 0 1px 0 rgba(207, 242, 255, 0.2), inset 0 -1px 0 rgba(1, 8, 16, 0.3);
  --liquid-cyan: #49c9e2;
  --liquid-blue: #588ee8;
  --liquid-violet: #9a75dd;
  --liquid-rose: #d17da4;
  --paper-grain: rgba(189, 225, 240, 0.012);
  --paper-fiber: rgba(189, 225, 240, 0.018);
  --paper-edge: rgba(138, 201, 226, 0.14);
}

html,
body {
  min-height: 100%;
  background-color: var(--bg);
}

body {
  position: relative;
  isolation: isolate;
  background-image:
    radial-gradient(circle at 12% 2%, color-mix(in srgb, var(--liquid-cyan) 26%, transparent) 0, transparent 31rem),
    radial-gradient(circle at 92% 18%, color-mix(in srgb, var(--liquid-violet) 22%, transparent) 0, transparent 34rem),
    radial-gradient(circle at 48% 96%, color-mix(in srgb, var(--liquid-blue) 16%, transparent) 0, transparent 38rem),
    linear-gradient(145deg, color-mix(in srgb, var(--bg) 92%, #ffffff 8%), var(--bg));
  background-attachment: fixed;
  transition: background-color 320ms ease, color 220ms ease;
}

body::before,
body::after {
  content: "";
  position: fixed;
  z-index: -1;
  width: min(42rem, 64vw);
  aspect-ratio: 1;
  border-radius: 42% 58% 67% 33% / 44% 38% 62% 56%;
  filter: blur(2px);
  opacity: 0.42;
  pointer-events: none;
  transform: translate3d(0, 0, 0);
  animation: liquid-orbit 22s ease-in-out infinite alternate;
}

body::before {
  top: 15vh;
  left: -22rem;
  background: linear-gradient(145deg, color-mix(in srgb, var(--liquid-cyan) 34%, transparent), color-mix(in srgb, var(--liquid-blue) 18%, transparent));
}

body::after {
  right: -24rem;
  bottom: -12rem;
  background: linear-gradient(145deg, color-mix(in srgb, var(--liquid-violet) 28%, transparent), color-mix(in srgb, var(--liquid-rose) 16%, transparent));
  animation-delay: -11s;
  animation-direction: alternate-reverse;
}

@keyframes liquid-orbit {
  0% { transform: translate3d(-2%, -2%, 0) rotate(-5deg) scale(0.94); }
  50% { transform: translate3d(4%, 3%, 0) rotate(4deg) scale(1.03); }
  100% { transform: translate3d(-1%, 7%, 0) rotate(9deg) scale(0.98); }
}

/* Primary glass surfaces */
.masthead,
body.home-page .profile_box,
.publication-list,
.thought-card,
.misc-note,
.hover-photo__card,
.site-options-fab__menu,
.page-header,
body.gallery-page .gallery-container,
body.gallery-page .gallery-modal__dialog,
.music-player {
  border: 1px solid var(--glass-stroke);
  background:
    linear-gradient(135deg, var(--glass-highlight) 0%, transparent 30%),
    linear-gradient(160deg, var(--glass-fill-strong), var(--glass-fill));
  box-shadow: var(--glass-shadow), var(--glass-inset);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(155%);
  backdrop-filter: blur(var(--glass-blur)) saturate(155%);
}

.masthead {
  border-width: 0 0 1px;
  border-color: var(--glass-stroke-soft);
  background: color-mix(in srgb, var(--nav-bg) 88%, transparent);
  box-shadow: 0 8px 28px rgba(33, 78, 100, 0.1), inset 0 1px 0 var(--glass-highlight);
  -webkit-backdrop-filter: blur(26px) saturate(170%);
  backdrop-filter: blur(26px) saturate(170%);
}

.greedy-nav .visible-links a,
.greedy-nav .hidden-links a {
  border-radius: 999px;
  transition: color 180ms ease, background-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.greedy-nav .visible-links a:hover,
.greedy-nav .visible-links a:focus-visible,
.greedy-nav .hidden-links a:hover,
.greedy-nav .hidden-links a:focus-visible {
  background: color-mix(in srgb, var(--glass-fill-strong) 82%, transparent);
  box-shadow: inset 0 1px 0 var(--glass-highlight), 0 7px 20px rgba(34, 97, 122, 0.12);
  transform: translateY(-1px);
}

.greedy-nav .visible-links a::before {
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--liquid-cyan), var(--liquid-violet));
}

.greedy-nav button,
.site-options-fab__trigger,
.site-options-fab__action,
.author__urls_sm a,
.author__affiliation,
.thoughts-action,
.button,
body.gallery-page .gallery-action.button,
body.gallery-page .gallery-modal__nav,
body.gallery-page .gallery-modal__close {
  border: 1px solid var(--glass-stroke);
  background:
    linear-gradient(135deg, var(--glass-highlight), transparent 46%),
    var(--glass-fill-soft);
  color: var(--text);
  box-shadow: var(--glass-inset), 0 8px 22px rgba(38, 89, 112, 0.1);
}

.greedy-nav button:hover,
.site-options-fab__trigger:hover,
.site-options-fab__action:hover,
.author__urls_sm a:hover,
.author__affiliation:hover,
.thoughts-action:hover,
.button:hover,
body.gallery-page .gallery-action.button:hover:not(:disabled),
body.gallery-page .gallery-modal__nav:hover,
body.gallery-page .gallery-modal__close:hover {
  border-color: color-mix(in srgb, var(--liquid-cyan) 52%, var(--glass-stroke));
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--glass-highlight) 88%, var(--liquid-cyan) 12%), transparent 48%),
    color-mix(in srgb, var(--glass-fill-strong) 88%, var(--liquid-cyan) 12%);
  box-shadow: var(--glass-inset), 0 12px 28px rgba(30, 107, 137, 0.17);
}

/* Profile glass */
body.home-page .profile_box {
  --profile-accent: var(--liquid-cyan);
  overflow: visible;
  border-radius: var(--glass-radius);
  background:
    radial-gradient(circle at 20% 0%, color-mix(in srgb, var(--liquid-cyan) 18%, transparent), transparent 44%),
    linear-gradient(140deg, var(--glass-highlight) 0%, transparent 29%),
    linear-gradient(165deg, var(--glass-fill-strong), var(--glass-fill));
}

body.home-page .profile_box::before {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--glass-highlight) 22%, color-mix(in srgb, var(--liquid-cyan) 62%, transparent) 52%, transparent);
  opacity: 1;
}

body.home-page .profile_box::after {
  background: radial-gradient(circle at 82% 8%, color-mix(in srgb, var(--liquid-violet) 15%, transparent), transparent 42%);
  opacity: 1;
}

.author__avatar-frame {
  border-color: var(--glass-stroke);
  border-radius: 24px;
  background:
    linear-gradient(135deg, var(--glass-highlight), transparent 38%),
    linear-gradient(145deg, color-mix(in srgb, var(--liquid-cyan) 30%, var(--glass-fill)), color-mix(in srgb, var(--liquid-violet) 22%, var(--glass-fill)));
  box-shadow:
    0 20px 38px rgba(25, 83, 108, 0.2),
    0 0 0 1px color-mix(in srgb, var(--liquid-cyan) 24%, transparent),
    var(--glass-inset);
}

.author__avatar-media,
.author__avatar-shine {
  border-radius: 18px;
}

.author__avatar-aura {
  background: radial-gradient(circle, color-mix(in srgb, var(--liquid-cyan) 38%, transparent), color-mix(in srgb, var(--liquid-violet) 12%, transparent) 44%, transparent 72%);
  filter: blur(18px);
}

.author__avatar-shine {
  background:
    radial-gradient(circle at var(--avatar-shine-x) var(--avatar-shine-y), rgba(255, 255, 255, 0.56), rgba(255, 255, 255, 0.1) 20%, transparent 48%),
    linear-gradient(120deg, rgba(255, 255, 255, 0.18), transparent 36%);
  mix-blend-mode: screen;
}

.author__avatar-corner {
  border-color: color-mix(in srgb, var(--liquid-cyan) 74%, var(--glass-highlight));
  filter: drop-shadow(0 0 6px color-mix(in srgb, var(--liquid-cyan) 34%, transparent));
}

.author__role {
  color: color-mix(in srgb, var(--link) 84%, var(--text-muted));
}

body.home-page .author__urls li a {
  border-radius: 10px;
}

body.home-page .author__urls li a:hover,
body.home-page .author__urls li a:focus-visible {
  background: color-mix(in srgb, var(--glass-fill-strong) 74%, var(--liquid-cyan) 8%);
  box-shadow: inset 0 1px 0 var(--glass-highlight);
}

.author__affiliations {
  border-color: var(--glass-stroke-soft);
}

/* Content rhythm */
body.home-page .page__content > h1,
body.home-page .page__content > h2,
body.home-page .page__content > h3 {
  position: relative;
  padding: 0.38rem 0.72rem;
  border: 1px solid color-mix(in srgb, var(--glass-stroke) 68%, transparent);
  border-radius: 14px;
  background:
    linear-gradient(110deg, color-mix(in srgb, var(--glass-highlight) 70%, transparent), transparent 34%),
    color-mix(in srgb, var(--glass-fill-soft) 78%, transparent);
  box-shadow: inset 0 1px 0 color-mix(in srgb, var(--glass-highlight) 72%, transparent);
  -webkit-backdrop-filter: blur(12px) saturate(135%);
  backdrop-filter: blur(12px) saturate(135%);
}

body.home-page .page__content > h1::after,
body.home-page .page__content > h2::after,
body.home-page .page__content > h3::after {
  content: "";
  position: absolute;
  left: 0.68rem;
  right: 54%;
  bottom: -1px;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--header-initial, var(--liquid-cyan)), transparent);
}

body.home-page .page__content blockquote,
.misc-note {
  border-radius: var(--glass-radius-small);
  border-left: 3px solid color-mix(in srgb, var(--liquid-cyan) 64%, var(--glass-stroke));
}

.hover-photo__card,
.thought-card,
.misc-note {
  border-radius: var(--glass-radius-small);
}

.hover-photo__card::after {
  border-color: color-mix(in srgb, var(--glass-stroke) 62%, transparent);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.16), transparent 42%);
}

.thought-card:hover,
.thought-card:has(:focus-visible) {
  border-color: color-mix(in srgb, var(--liquid-cyan) 44%, var(--glass-stroke));
  box-shadow: var(--glass-shadow-hover), var(--glass-inset);
  transform: translateY(-3px);
}

/* Publications */
.publication-list {
  overflow: hidden;
  border-radius: var(--glass-radius);
  border-top-color: var(--glass-stroke);
}

.publication-item {
  --publication-active-bg: linear-gradient(105deg, color-mix(in srgb, var(--liquid-cyan) 11%, transparent), color-mix(in srgb, var(--liquid-violet) 7%, transparent));
  --publication-active-shadow: inset 3px 0 0 color-mix(in srgb, var(--liquid-cyan) 62%, transparent), inset 0 1px 0 var(--glass-highlight);
  border-color: var(--glass-stroke-soft);
}

.publication-thumb-wrap,
.paper-box .paper-box-image > div {
  border-color: var(--glass-stroke);
  border-radius: 16px;
  background:
    linear-gradient(135deg, var(--glass-highlight), transparent 36%),
    var(--glass-fill-soft);
  box-shadow: var(--glass-inset), 0 12px 30px rgba(33, 83, 106, 0.13);
}

.publication-thumb-wrap::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 3;
  border-radius: inherit;
  border: 1px solid color-mix(in srgb, var(--glass-highlight) 54%, transparent);
  pointer-events: none;
}

.publication-tag {
  border-color: var(--glass-stroke);
  border-radius: 999px;
  -webkit-backdrop-filter: blur(10px) saturate(150%);
  backdrop-filter: blur(10px) saturate(150%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.45), 0 5px 14px rgba(8, 32, 48, 0.18);
}

/* Standalone pages and gallery */
.page-header {
  border-width: 0 0 1px;
  border-radius: 0 0 34px 34px;
  background:
    radial-gradient(circle at 50% -20%, color-mix(in srgb, var(--liquid-cyan) 20%, transparent), transparent 34rem),
    linear-gradient(160deg, var(--glass-fill-strong), var(--glass-fill));
}

body.gallery-page .gallery-container {
  border-radius: 28px;
  background:
    radial-gradient(circle at 10% 0%, color-mix(in srgb, var(--liquid-cyan) 12%, transparent), transparent 28rem),
    linear-gradient(145deg, var(--glass-highlight) 0%, transparent 24%),
    linear-gradient(165deg, var(--glass-fill-strong), var(--glass-fill));
}

body.gallery-page .gallery a {
  border-color: var(--glass-stroke);
  border-radius: 18px;
  background:
    linear-gradient(135deg, var(--glass-highlight), transparent 34%),
    var(--glass-fill-soft);
  box-shadow: var(--glass-inset), 0 12px 28px rgba(30, 76, 98, 0.14);
}

body.gallery-page .gallery a::before {
  border: 7px solid color-mix(in srgb, var(--glass-fill-strong) 80%, transparent);
  border-radius: inherit;
  box-shadow: inset 0 0 0 1px var(--glass-stroke-soft), inset 0 1px 0 var(--glass-highlight);
}

body.gallery-page .gallery a::after {
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.2), transparent 34%),
    linear-gradient(180deg, transparent 58%, rgba(5, 16, 28, 0.28));
}

body.gallery-page .gallery a:hover,
body.gallery-page .gallery a:focus-visible {
  border-color: color-mix(in srgb, var(--liquid-cyan) 48%, var(--glass-stroke));
  background: color-mix(in srgb, var(--glass-fill-strong) 88%, var(--liquid-cyan) 8%);
  box-shadow: var(--glass-shadow-hover), var(--glass-inset);
  transform: translateY(-5px) scale(1.01);
}

body.gallery-page .gallery-card__zoom {
  border-color: var(--glass-stroke);
  border-radius: 12px;
  background: color-mix(in srgb, var(--glass-fill-strong) 84%, transparent);
  -webkit-backdrop-filter: blur(12px) saturate(150%);
  backdrop-filter: blur(12px) saturate(150%);
  box-shadow: var(--glass-inset);
}

body.gallery-page .gallery-modal__backdrop {
  background: color-mix(in srgb, var(--bg) 56%, rgba(2, 9, 18, 0.56));
  -webkit-backdrop-filter: blur(12px) saturate(120%);
  backdrop-filter: blur(12px) saturate(120%);
}

body.gallery-page .gallery-modal__dialog {
  border-radius: 28px;
}

body.gallery-page .gallery-modal__image-stage,
body.gallery-page .gallery-modal__strip,
body.gallery-page .gallery-modal__thumb {
  border-color: var(--glass-stroke-soft);
  background: color-mix(in srgb, var(--glass-fill-soft) 84%, transparent);
  box-shadow: inset 0 1px 0 color-mix(in srgb, var(--glass-highlight) 64%, transparent);
}

body.gallery-page .gallery-modal__image-stage {
  border-radius: 18px;
}

body.gallery-page .gallery-modal__strip {
  border-radius: 16px;
}

body.gallery-page .gallery-modal__thumb {
  border-radius: 12px;
}

body.gallery-page .gallery-modal__thumb.is-active {
  border-color: var(--liquid-cyan);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--liquid-cyan) 24%, transparent), 0 8px 18px rgba(22, 100, 130, 0.18);
}

/* Floating controls, footer and media player */
.site-options-fab__trigger {
  border-radius: 50%;
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  backdrop-filter: blur(18px) saturate(150%);
}

.site-options-fab__menu {
  border-radius: 18px;
}

.site-runtime {
  border-color: var(--glass-stroke-soft);
  background: color-mix(in srgb, var(--glass-fill-soft) 70%, transparent);
  box-shadow: inset 0 1px 0 color-mix(in srgb, var(--glass-highlight) 60%, transparent);
  -webkit-backdrop-filter: blur(14px) saturate(130%);
  backdrop-filter: blur(14px) saturate(130%);
}

.site-runtime__elapsed {
  border-color: var(--glass-stroke-soft);
  background: var(--glass-fill-soft);
  box-shadow: inset 0 1px 0 var(--glass-highlight);
}

.music-player {
  border-radius: var(--glass-radius);
}

/* Graceful fallbacks */
@supports not ((-webkit-backdrop-filter: blur(1px)) or (backdrop-filter: blur(1px))) {
  .masthead,
  body.home-page .profile_box,
  .publication-list,
  .thought-card,
  .misc-note,
  .hover-photo__card,
  .site-options-fab__menu,
  .page-header,
  body.gallery-page .gallery-container,
  body.gallery-page .gallery-modal__dialog,
  .music-player {
    background-color: color-mix(in srgb, var(--bg) 88%, #ffffff 12%);
  }
}

@media (prefers-reduced-transparency: reduce) {
  :root {
    --glass-fill: color-mix(in srgb, var(--bg) 92%, #ffffff 8%);
    --glass-fill-strong: color-mix(in srgb, var(--bg) 86%, #ffffff 14%);
    --glass-fill-soft: color-mix(in srgb, var(--bg) 94%, #ffffff 6%);
  }

  .masthead,
  body.home-page .profile_box,
  .publication-list,
  .thought-card,
  .misc-note,
  .hover-photo__card,
  .site-options-fab__menu,
  .page-header,
  body.gallery-page .gallery-container,
  body.gallery-page .gallery-modal__dialog,
  .music-player {
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  body::before,
  body::after {
    animation: none;
  }
}

@media (max-width: 48em) {
  :root {
    --glass-blur: 18px;
    --glass-radius: 18px;
  }

  body::before,
  body::after {
    width: 82vw;
    opacity: 0.3;
  }

  body.home-page .profile_box,
  body.gallery-page .gallery-container,
  body.gallery-page .gallery-modal__dialog {
    border-radius: 20px;
  }

  body.home-page .page__content > h1,
  body.home-page .page__content > h2,
  body.home-page .page__content > h3 {
    border-radius: 12px;
  }
}