:root {
  color-scheme: light dark;
  --bg: #090d1f;
  --bg-elev: rgba(12, 17, 34, 0.24);
  --card: rgba(18, 25, 50, 0.2);
  --text: #ebf0ff;
  --text-dim: #9aa9c9;
  --line: rgba(96, 191, 255, 0.4);
  --accent: #00a2ff;
  --accent-2: #7de1ff;
  --shadow: 0 20px 45px rgba(0, 0, 0, 0.35);
  --glass-blur: 12px;
}

html {
  scroll-behavior: smooth;
}

html[data-theme="light"] {
  --bg: #f3f6ff;
  --bg-elev: rgba(255, 255, 255, 0.22);
  --card: rgba(255, 255, 255, 0.2);
  --text: #1b2a49;
  --text-dim: #627392;
  --line: rgba(108, 156, 228, 0.34);
  --accent: #2d83f2;
  --accent-2: #79c2ff;
  --shadow: 0 12px 24px rgba(22, 39, 80, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  background: radial-gradient(circle at 80% -10%, rgba(0, 162, 255, 0.56), transparent 42%),
    radial-gradient(circle at 10% -20%, rgba(95, 211, 255, 0.4), transparent 40%), var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

html[data-theme="light"] body {
  background: radial-gradient(circle at 82% -10%, rgba(104, 175, 255, 0.18), transparent 52%),
    radial-gradient(circle at 8% -16%, rgba(139, 209, 255, 0.12), transparent 50%), var(--bg);
}

html[data-theme="light"] #gridCanvas {
  opacity: 0.22;
}

html[data-theme="light"] body::before {
  opacity: 0.24;
  filter: blur(18px) saturate(0.86);
}

#gridCanvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  opacity: 0.58;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: -12% -10%;
  pointer-events: none;
  z-index: -2;
}

body::before {
  background:
    radial-gradient(circle at 22% 14%, color-mix(in srgb, var(--accent) 26%, transparent), transparent 33%),
    radial-gradient(circle at 84% 72%, color-mix(in srgb, var(--accent-2) 20%, transparent), transparent 36%),
    radial-gradient(circle at 58% 106%, color-mix(in srgb, var(--accent) 13%, transparent), transparent 42%);
  filter: blur(24px) saturate(1.04);
  opacity: 0.58;
  animation: bg-orb-drift 32s ease-in-out infinite alternate;
}

body::after {
  background-image: none;
  opacity: 0;
  animation: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 120;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: var(--bg-elev);
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 6vw;
  isolation: isolate;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
}

.brand-mark {
  width: 0.9rem;
  height: 0.9rem;
  border-radius: 999px;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 20px color-mix(in srgb, var(--accent) 55%, transparent);
}

.brand-main {
  color: var(--text);
}

.brand-branch {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 1.35rem;
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.2rem 0.62rem;
  line-height: 1;
  font-family: "IBM Plex Mono", monospace;
  color: var(--text);
  background: color-mix(in srgb, var(--card) 70%, transparent);
}

.theme-toggle {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  padding: 0.5rem 0.85rem;
  border-radius: 999px;
  cursor: pointer;
  font-family: "IBM Plex Mono", monospace;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  overflow: hidden;
}

.theme-toggle-icon {
  position: relative;
  width: 1.05rem;
  height: 1.05rem;
  display: inline-grid;
  place-items: center;
}

.theme-moon,
.theme-sun {
  position: absolute;
  font-size: 0.9rem;
  line-height: 1;
  transform-origin: 50% 50%;
  transition: transform 320ms ease, opacity 200ms ease;
}

.theme-toggle[data-theme="dark"] .theme-moon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

.theme-toggle[data-theme="dark"] .theme-sun {
  opacity: 0;
  transform: rotate(90deg) scale(0.6);
}

.theme-toggle[data-theme="light"] .theme-moon {
  opacity: 0;
  transform: rotate(-90deg) scale(0.6);
}

.theme-toggle[data-theme="light"] .theme-sun {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

main {
  width: min(1100px, 90vw);
  margin: 0 auto;
  padding: 3rem 0 4rem;
  position: relative;
  z-index: 1;
}

.hero {
  padding: 0.7rem 0 1.7rem;
}

.eyebrow {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.82rem;
  margin-bottom: 1rem;
}

.hero h1 {
  margin: 0;
  font-size: clamp(1.9rem, 4vw, 3.1rem);
  line-height: 1.08;
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  color: transparent;
}

.hero p {
  margin-top: 1rem;
  max-width: 70ch;
  color: var(--text-dim);
}

.panel {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: color-mix(in srgb, var(--card) 88%, transparent);
  box-shadow: var(--shadow);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  padding: 1.1rem;
}

.panel + .panel {
  margin-top: 1rem;
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
}

.panel-head h2,
.panel-head h3 {
  margin: 0;
}

.status-note,
.status-line {
  color: var(--text-dim);
}

.status-line {
  min-height: 1.4rem;
}

.stack-form {
  display: grid;
  gap: 0.72rem;
  margin-top: 0.8rem;
}

label {
  font-size: 0.86rem;
  color: var(--text-dim);
}

input,
textarea,
button {
  font: inherit;
}

input,
textarea {
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--card) 76%, transparent);
  color: var(--text);
  border-radius: 12px;
  padding: 0.68rem 0.8rem;
}

.btn {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  border-radius: 999px;
  padding: 0.5rem 0.85rem;
  cursor: pointer;
  font-family: "IBM Plex Mono", monospace;
}

.btn-primary {
  border: none;
  color: #031428;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
}

.btn-ghost {
  background: color-mix(in srgb, var(--card) 70%, transparent);
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.hidden {
  display: none;
}

.vault-actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.stat-pill {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.3rem 0.6rem;
  font-size: 0.75rem;
  color: var(--text-dim);
  font-family: "IBM Plex Mono", monospace;
}

.upload-shell {
  margin-top: 0.9rem;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.drop-zone {
  border: 1px dashed color-mix(in srgb, var(--line) 95%, transparent);
  border-radius: 16px;
  padding: 1.2rem;
  text-align: center;
  background: color-mix(in srgb, var(--card) 84%, transparent);
  transition: border-color 180ms ease, transform 180ms ease, background 180ms ease;
}

.drop-zone.is-dragging {
  border-color: color-mix(in srgb, var(--accent) 70%, white);
  transform: translateY(-1px) scale(1.002);
  background: color-mix(in srgb, var(--card) 60%, transparent);
}

.drop-title {
  margin: 0 0 0.18rem;
  font-weight: 700;
}

.drop-sub,
.selected-file {
  margin: 0.38rem 0 0;
  color: var(--text-dim);
}

#browseBtn {
  margin-top: 0.72rem;
}

.selected-file {
  margin-top: 0.62rem;
}

.selected-file {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.8rem;
}

.upload-footer {
  margin-top: 0.8rem;
  display: grid;
  gap: 0.7rem;
}

.upload-progress-wrap {
  width: 100%;
  background: color-mix(in srgb, var(--line) 22%, transparent);
  border-radius: 999px;
  height: 8px;
  overflow: hidden;
}

.upload-progress {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width 120ms linear;
}

.files-grid {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
}

.file-card {
  border: 1px solid color-mix(in srgb, var(--line) 72%, transparent);
  border-radius: 14px;
  padding: 0.85rem;
  background: color-mix(in srgb, var(--card) 70%, transparent);
}

.file-card h3 {
  margin: 0;
  word-break: break-word;
  font-size: 0.99rem;
}

.file-title-row {
  display: flex;
  align-items: center;
  gap: 0.62rem;
}

.file-thumb {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 9px;
  border: 1px solid color-mix(in srgb, var(--line) 62%, transparent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: color-mix(in srgb, var(--card) 80%, transparent);
  overflow: hidden;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  flex: 0 0 auto;
}

.file-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.file-meta {
  margin: 0.48rem 0 0.72rem;
  color: var(--text-dim);
  font-size: 0.8rem;
  font-family: "IBM Plex Mono", monospace;
}

.file-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.42rem;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 300;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(2, 6, 19, 0.62);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.modal-card {
  position: relative;
  width: min(840px, 92vw);
  max-height: 92vh;
  margin: 8vh auto 0;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: color-mix(in srgb, var(--card) 92%, transparent);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.modal-card.is-compact {
  width: min(96vw, 1500px);
  max-width: 96vw;
  max-height: 96vh;
  margin-top: 2vh;
}

.modal-card-large {
  width: min(1040px, 95vw);
}

.modal-card-confirm {
  width: min(520px, 92vw);
}

.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.7rem;
  padding: 0.75rem 0.9rem;
  border-bottom: 1px solid color-mix(in srgb, var(--line) 65%, transparent);
}

.modal-body {
  padding: 0.9rem;
  overflow: auto;
}

.modal-body.is-media {
  overflow: hidden;
  display: grid;
  place-items: center;
  min-height: 72vh;
}

.preview-image,
.preview-video,
.preview-audio,
.preview-embed {
  width: 100%;
}

.preview-image,
.preview-video,
.preview-embed {
  border-radius: 10px;
  border: 1px solid color-mix(in srgb, var(--line) 55%, transparent);
  max-width: 96vw;
  max-height: 84vh;
  object-fit: contain;
  background: rgba(0, 0, 0, 0.24);
}

.preview-text {
  white-space: pre-wrap;
  margin: 0;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.84rem;
  line-height: 1.45;
}

.editor-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.editor-area {
  width: 100%;
  min-height: 56vh;
  resize: vertical;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.86rem;
  line-height: 1.45;
}

@media (max-width: 980px) {
  .files-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .site-header {
    padding: 0.86rem 4vw;
  }

  .brand {
    gap: 0.4rem;
  }

  .brand-main {
    font-size: 0.9rem;
  }

  .brand-branch {
    font-size: 0.67rem;
    padding: 0.17rem 0.5rem;
  }

  main {
    width: 94vw;
    padding-top: 2rem;
  }

  .panel-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .vault-actions {
    width: 100%;
    justify-content: space-between;
  }

  .files-grid {
    grid-template-columns: 1fr;
  }

  .modal-card,
  .modal-card-large {
    width: 96vw;
    margin-top: 5vh;
    max-height: 90vh;
  }
}

body.perf-lite #gridCanvas {
  opacity: 0.42;
}

body.perf-lite::before {
  animation: none;
  filter: blur(16px) saturate(0.95);
  opacity: 0.42;
}

body.perf-lite .site-header,
body.perf-lite .panel {
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

@keyframes bg-orb-drift {
  0% {
    transform: translate3d(-1.8%, -1%, 0) scale(1);
  }
  50% {
    transform: translate3d(1.2%, 1.6%, 0) scale(1.02);
  }
  100% {
    transform: translate3d(2%, -1.4%, 0) scale(0.995);
  }
}