@font-face {
    font-family: 'GothicTitle';
    src: url('./GothicII.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
}

/* ===== Reset / Base ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

:root {
  --bg: #0f172a;
  --bg-elevated: #111827;
  --bg-soft: #020617;
  --border-subtle: #1f2937;
  --accent: #38bdf8;
  --accent-soft: rgba(56, 189, 248, 0.15);
  --accent-strong: #0ea5e9;
  --text: #e5e7eb;
  --text-muted: #9ca3af;
  --danger: #f97373;
  --radius-lg: 18px;
  --shadow-soft: 0 18px 40px rgba(15, 23, 42, 0.45);
  --transition-fast: 150ms ease-out;
  --gap: 1.25rem;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
}

html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
  overflow: hidden;   /* page itself no longer scrolls */
}

body {
  font-family: var(--font-sans);
  background: radial-gradient(circle at top, #1f2937 0, #020617 55%, #000 100%);
  background-attachment: fixed;    /* key: stays put while content scrolls */
  background-repeat: no-repeat;
  background-size: cover;
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

/* ===== Layout ===== */

.app {
  height: 100vh;          /* exactly one viewport */
  max-width: 2000px;      /* or whatever you use */
  margin: 0 auto;
  padding: 1.5rem 3rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  padding: 0.75rem 1rem;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.9), rgba(15, 23, 42, 0.75));
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.2);
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(14px);
}

.header-meta {
	text-align: right;
	font-size: 0.80rem;
	opacity: 0.9;
	padding-top: inherit;
	color: var(--text-muted);
	margin: 0.15rem 0 0;
	letter-spacing: 0.12em;
}

.app-header h1 {
  margin: 0;
  font-size: 1.4rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.app-subtitle {
  margin: 0.15rem 0 0;
  font-size: 0.79rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
}

.app-nav a {
  padding: 0.5rem 0.9rem;
  font-size: 0.85rem;
  color: var(--text);
  text-decoration: none;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.4);
  background: radial-gradient(circle at top, rgba(56, 189, 248, 0.2), transparent);
  transition: background var(--transition-fast), border-color var(--transition-fast),
    transform var(--transition-fast), box-shadow var(--transition-fast);
}

.app-nav a:hover {
  border-color: var(--accent);
  background: radial-gradient(circle at top, rgba(56, 189, 248, 0.35), rgba(15, 23, 42, 0.9));
  transform: translateY(-1px);
  box-shadow: 0 10px 30px rgba(56, 189, 248, 0.25);
}

/* Main content layout */

.app-main {
  flex: 1;  /* take remaining space under the header */
  min-height: 0;  /* important so child can scroll */
  display: grid;
  grid-template-columns:
    280px              /* left: filters */
    minmax(0, 2fr)   /* middle: gallery */
    600px;             /* right: preview */
  gap: 1.5rem;
  align-items: flex-start;   /* important for sticky */
}

/* Panels */

.panel {
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.96), rgba(15, 23, 42, 0.92));
  border-radius: var(--radius-lg);
  border: 1px solid rgba(31, 41, 55, 0.9);
  box-shadow: var(--shadow-soft);
  padding: 1rem 1rem 1.1rem;
  position: relative;
  overflow: hidden;
}

.panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top left, rgba(56, 189, 248, 0.1), transparent 55%);
  opacity: 0.6;
  pointer-events: none;
}

.panel > * {
  position: relative;
  z-index: 1;
}

.panel-title {
  margin: 0 0 0.55rem;
  font-size: 0.95rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

/* Controls */

#controls-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.field-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.field-label {
  font-size: 0.79rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.field-inline {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.86rem;
  color: var(--text);
}

.field-inline input[type="checkbox"],
.field-inline input[type="radio"] {
  accent-color: var(--accent);
  transform: translateY(1px);
}

select,
input[type="text"] {
  width: 100%;
  padding: 0.4rem 0.55rem;
  border-radius: 999px;
  border: 1px solid rgba(55, 65, 81, 0.9);
  background-color: #020617;      /* solid dark background */
  color: #e5e7eb;                 /* light text */
  font: inherit;
  outline: none;
}

/* Make sure dropdown list items are readable too */
select option {
  background-color: #020617;
  color: #e5e7eb;
}

select:focus,
input[type="text"]:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.6);
  background: radial-gradient(circle at top left, #020617, #020617);
}

.field-help {
  margin: 0;
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Gallery */

.panel--gallery {
  height: 100%;
  overflow-y: auto;      /* only this one scrolls */
  overflow-x: hidden;
}

/* ====== Custom Scrollbar (WebKit-based browsers) ====== */

.panel--gallery::-webkit-scrollbar {
  width: 12px;                 /* thickness */
}

.panel--gallery::-webkit-scrollbar-track {
  background: rgba(10, 12, 24, 0.6);  /* dark background */
  border-radius: 10px;
}

.panel--gallery::-webkit-scrollbar-thumb {
  background: linear-gradient(to bottom, #1e3a8a, #0f172a); /* blue ? dark navy */
  border-radius: 10px;
  border: 2px solid rgba(15, 23, 42, 0.9);  /* inner padding effect */
  box-shadow: 0 0 8px rgba(30, 58, 138, 0.4)
}

.panel--gallery::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(to bottom, #3758c7, #1e3a8a);  /* brighter on hover */
}

/* ===== For Firefox ===== */
.panel--gallery {
  scrollbar-width: thin;      
  scrollbar-color: #1e3a8a rgba(10, 12, 24, 0.6);
}


.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: 0.6rem;
  margin-top: 0.3rem;
}

.gallery-empty {
  margin: 0.5rem 0 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.vob-card {
  background: radial-gradient(circle at top left, rgba(15, 23, 42, 0.9), rgba(2, 6, 23, 0.95));
  border-radius: 12px;
  padding: 0.45rem 0.45rem 0.35rem;
  border: 1px solid rgba(31, 41, 55, 0.95);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  box-shadow: 0 10px 25px rgba(15, 23, 42, 0.6);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast),
    border-color var(--transition-fast), background var(--transition-fast);
}

.vob-card--framed {
  border-width: 2px;
  border-color: var(--frame-color, rgba(55, 65, 81, 0.9));
}

.vob-card:hover {
  transform: translateY(-1.5px) translateZ(0);
  border-color: var(--accent-soft);
  background: radial-gradient(circle at top left, rgba(56, 189, 248, 0.08), rgba(2, 6, 23, 0.98));
  box-shadow: 0 14px 32px rgba(15, 23, 42, 0.9);
}

/* Default: 2x2 grid for 4 thumbnails */
.vob-thumbs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.2rem;
}

/* Interactive: only one image – center and enlarge it */
.vob-thumbs--single {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.25rem;
}

.vob-thumbs--single .vob-thumb-button {
  width: 100%;
  max-width: 180px;      /* tweak to taste */
  aspect-ratio: 1 / 1;   /* square-ish */
}

.vob-thumbs--single .vob-thumb-button img {
  width: 100%;
  height: 100%;
  object-fit: cover;      /* fills the single slot nicely */
}

.vob-thumb-button {
  border: 0;
  padding: 0;
  background: transparent;
  border-radius: 9px;
  overflow: hidden;
  cursor: pointer;
  box-shadow: 0 0 0 1px rgba(30, 64, 175, 0.25);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast),
    background var(--transition-fast), opacity var(--transition-fast);
}

.vob-thumb-button img {
  display: block;
  width: 100%;
  height: auto;
}

.vob-thumb-button:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.65), 0 6px 20px rgba(15, 23, 42, 0.9);
  background: radial-gradient(circle at top, rgba(56, 189, 248, 0.18), transparent);
}

.vob-name {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: center;
  word-break: break-all;
}

/* Preview */

.panel--controls,
.panel--preview {
  min-height: 480px;          /* taller panel */
  position: static;
  top: auto;        /* how far from top of screen when stuck */
  align-self: flex-start;
}

.preview-box {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  height: 100%;
}

.preview-image-wrapper {
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid rgba(31, 41, 55, 0.9);
  background: radial-gradient(circle at top, rgba(30, 64, 175, 0.3), rgba(2, 6, 23, 0.95));
  min-height: 360px;          /* was ~260 */
  height: 420px;              /* fixed big preview; tweak if needed */
  display: flex;
  align-items: stretch;
  justify-content: stretch;
  position: relative;
}

.preview-image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;           /* fill the frame, crop edges if needed */
  display: block;
}

.preview-info {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.preview-name {
  font-size: 0.9rem;
  font-weight: 600;
}

.preview-note {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ===== Responsive ===== */

@media (max-width: 1024px) {
  .app-main {
    grid-template-columns: minmax(220px, 260px) minmax(0, 1.7fr);
    grid-template-rows: auto auto;
    grid-template-areas:
      "controls preview"
      "gallery gallery";
  }

  .panel--controls {
    grid-area: controls;
  }

  .panel--gallery {
    grid-area: gallery;
  }

  .panel--preview {
    grid-area: preview;
  }
}

@media (max-width: 768px) {
  .app-header {
    flex-direction: column;
    align-items: flex-start;
    border-radius: 20px;
  }

  .app-main {
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: auto auto auto;
    grid-template-areas:
      "controls"
      "preview"
      "gallery";
  }

  .panel--controls,
  .panel--gallery,
  .panel--preview {
    width: 100%;
  }
}