/* =========================================================
   LUMOSCODE — GLASSMORPHIC UI
   ========================================================= */

:root {
  /* palette */
  --violet:   #ab97f0;
  --teal:     #78e4db;
  --amber:    #f4cd3e;
  --coral:    #f4623e;
  --azure:    #3e96f4;

  /* dark theme surface */
  --bg-1: #0d0b1a;
  --bg-2: #171233;
  --glass-bg:     rgba(255, 255, 255, 0.06);
  --glass-strong: rgba(255, 255, 255, 0.10);
  --glass-brd:    rgba(255, 255, 255, 0.14);
  --glass-hi:     rgba(255, 255, 255, 0.22);
  --text:     #ece9ff;
  --text-dim: #a49fc4;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.38);

  --radius: 16px;
  --radius-sm: 10px;
  --head-h: 40px;
}

body.light {
  --bg-1: #e9e4ff;
  --bg-2: #cfe9f5;
  --glass-bg:     rgba(255, 255, 255, 0.45);
  --glass-strong: rgba(255, 255, 255, 0.62);
  --glass-brd:    rgba(255, 255, 255, 0.70);
  --glass-hi:     rgba(255, 255, 255, 0.85);
  --text:     #23204a;
  --text-dim: #5b5788;
  --shadow: 0 8px 32px rgba(80, 70, 140, 0.18);
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
}

body {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 12px;
  overflow: hidden;

  font-family: "Outfit", system-ui, sans-serif;
  color: var(--text);
  background: linear-gradient(145deg, var(--bg-1), var(--bg-2));
  transition: background 0.4s ease, color 0.3s ease;
}


/* ---------- background glow blobs ---------- */

.backdrop {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
}

.blob {
  position: absolute;
  width: 46vw;
  height: 46vw;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.45;
}

.blob--violet { background: var(--violet); top: -14vw; left: -8vw; }
.blob--teal   { background: var(--teal);   bottom: -16vw; right: -6vw; }
.blob--amber  { background: var(--amber);  top: 40%; left: 45%; opacity: 0.20; }


/* ---------- shared glass surface ---------- */

.glass {
  background: var(--glass-bg);
  border: 1px solid var(--glass-brd);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
}


/* =========================================================
   HEADER
   ========================================================= */

.topbar {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 10px 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.brand i { color: var(--violet); }

.btn-container {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}


/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;

  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--glass-brd);
  background: var(--glass-bg);
  color: var(--text);

  font-family: inherit;
  font-size: 0.86rem;
  font-weight: 500;
  cursor: pointer;

  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: background 0.18s ease, transform 0.18s ease, border-color 0.18s ease;
}

.btn:hover {
  background: var(--glass-hi);
  border-color: var(--glass-hi);
  transform: translateY(-1px);
}

.btn:active { transform: translateY(0); }

.btn:focus-visible,
.theme-toggle:focus-visible,
select:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}

.btn--primary {
  background: linear-gradient(135deg, rgba(171, 151, 240, 0.85), rgba(120, 228, 219, 0.75));
  border-color: transparent;
  color: #16122b;
  font-weight: 600;
}

.btn--primary:hover {
  background: linear-gradient(135deg, rgba(171, 151, 240, 1), rgba(120, 228, 219, 0.9));
}

.btn--danger:hover {
  background: rgba(244, 98, 62, 0.28);
  border-color: rgba(244, 98, 62, 0.5);
}


/* ---------- select ---------- */

.select-wrap {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--glass-brd);
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.select-wrap i { color: var(--teal); font-size: 0.85rem; }

select {
  border: none;
  background: transparent;
  color: var(--text);
  font-family: inherit;
  font-size: 0.86rem;
  cursor: pointer;
}

select option {
  background: #171233;
  color: #ece9ff;
}

body.light select option {
  background: #ffffff;
  color: #23204a;
}


/* ---------- theme toggle ---------- */

.theme-toggle {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;

  border-radius: 50%;
  border: 1px solid var(--glass-brd);
  background: var(--glass-bg);
  color: var(--amber);

  cursor: pointer;
  transition: transform 0.25s ease, background 0.18s ease;
}

.theme-toggle:hover {
  background: var(--glass-hi);
  transform: rotate(-18deg);
}


/* =========================================================
   WORKSPACE — EDITORS LEFT, OUTPUT RIGHT
   ========================================================= */

.workspace {
  flex: 1;
  min-height: 0;

  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr;
  gap: 12px;
}

#editor-container {
  min-width: 0;
  min-height: 0;

  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: repeat(3, 1fr);   /* HTML → CSS → JavaScript */
  gap: 12px;
}


/* ---------- panels ---------- */

.panel {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
}

.panel__head {
  flex-shrink: 0;
  height: var(--head-h);

  display: flex;
  align-items: center;
  gap: 9px;
  padding: 0 14px;

  background: var(--glass-strong);
  border-bottom: 1px solid var(--glass-brd);
}

.panel__head h2 {
  margin: 0;
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--text);
}

#html-editor .panel__head i { color: var(--coral); }
#css-editor  .panel__head i { color: var(--azure); }
#js-editor   .panel__head i { color: var(--amber); }
.output-container .panel__head i { color: var(--teal); }

.status {
  margin-left: auto;
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(120, 228, 219, 0.18);
  border: 1px solid rgba(120, 228, 219, 0.35);
  color: var(--teal);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
}


/* ---------- CodeMirror ---------- */

.editor {
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

.CodeMirror {
  width: 100%;
  height: 100% !important;
  font-family: "JetBrains Mono", "Courier New", monospace;
  font-size: 13.5px;
  background: transparent !important;
}

.CodeMirror-gutters {
  background: rgba(0, 0, 0, 0.18) !important;
  border-right: 1px solid var(--glass-brd) !important;
}

body.light .CodeMirror-gutters {
  background: rgba(255, 255, 255, 0.35) !important;
}

.CodeMirror-hscrollbar,
.CodeMirror-vscrollbar {
  scrollbar-width: none;
}

.CodeMirror-hscrollbar::-webkit-scrollbar,
.CodeMirror-vscrollbar::-webkit-scrollbar {
  display: none;
}


/* ---------- output ---------- */

.output-stage {
  flex: 1;
  min-height: 0;
  display: flex;
  justify-content: center;
  padding: 10px;
  overflow: auto;
}

.output-container iframe {
  width: 100%;
  height: 100%;
  border: none;
  border-radius: var(--radius-sm);
  background: #fff;
  transition: width 0.25s ease;
}


/* ---------- toast ---------- */

.toast {
  position: fixed;
  left: 50%;
  bottom: 26px;
  transform: translate(-50%, 24px);

  padding: 11px 20px;
  font-size: 0.88rem;

  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}


/* =========================================================
   RESPONSIVE
   ========================================================= */

@media (max-width: 900px) {

  body { overflow: auto; }

  .workspace {
    display: flex;
    flex-direction: column;
  }

  #editor-container { height: 620px; }

  .output-container { height: 460px; }

  .btn-container { justify-content: center; }
}

@media (max-width: 560px) {

  .btn span { display: none; }

  .btn { padding: 9px 12px; }

  .brand span { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}