/* ── CSS custom properties ────────────────────────────────────────
   present.css — Default values = index.html (larger).
   body.compact overrides = content.html (add-in, smaller).
   ─────────────────────────────────────────────────────────────── */
:root {
  --logo-font:     15px;
  --logo-img-size: 28px;
  --hdr-padding:   10px 14px;
  --hdr-gap:       10px;
  --input-padding: 7px 12px;
  --input-font:    14px;
  --radius:        6px;
  --btn-padding:   7px 16px;
  --btn-font:      13px;
  --sel-padding:   7px 10px;
  --sel-font:      13px;
  --sel-maxw:      none;
  --banner-pad:    6px 14px;
  --banner-font:   12px;
}

body.compact {
  --logo-font:     11px;
  --logo-img-size: 22px;
  --hdr-padding:   6px 10px;
  --hdr-gap:       8px;
  --input-padding: 4px 8px;
  --input-font:    12px;
  --radius:        5px;
  --btn-padding:   4px 10px;
  --btn-font:      12px;
  --sel-padding:   4px 6px;
  --sel-font:      11px;
  --sel-maxw:      110px;
  --banner-pad:    4px 10px;
  --banner-font:   11px;
}

/* ── Base ─────────────────────────────────────────────────────── */
* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: #0f1117;
  color: #e2e8f0;
  height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Floating logo button ─────────────────────────────────────── */
.logo-fab {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 300;
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: 8px;
  background: rgba(26, 29, 39, 0.85);
  border: 1px solid #2d3148;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, border-color 0.2s;
  flex-shrink: 0;
}

.logo-fab:hover { background: rgba(26, 29, 39, 1); border-color: #7c9ef8; }
.logo-fab img   { width: 22px; height: 22px; border-radius: 4px; object-fit: cover; }

body.compact .logo-fab { width: 30px; height: 30px; top: 7px; left: 7px; }
body.compact .logo-fab img { width: 18px; height: 18px; }

/* ── Header panel (fixed overlay, slides from top) ────────────── */
#header-panel {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  transform: translateY(-100%);
  transition: transform 0.25s ease;
  pointer-events: none;
}

#header-panel.visible {
  transform: translateY(0);
  pointer-events: auto;
}

/* ── Header ───────────────────────────────────────────────────── */
header {
  display: flex;
  align-items: center;
  gap: var(--hdr-gap);
  padding: var(--hdr-padding);
  background: #1a1d27;
  border-bottom: 1px solid #2d3148;
  flex-wrap: wrap;          /* enables 2-row layout on mobile */
  transition: padding 0.2s;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: var(--logo-font);
  color: #7c9ef8;
  letter-spacing: 0.4px;
  white-space: nowrap;
  flex-shrink: 0;
}

.logo span span { color: #e2e8f0; }

.logo-img {
  height: var(--logo-img-size);
  width: var(--logo-img-size);
  object-fit: cover;
  border-radius: 5px;
  flex-shrink: 0;
}

.input-group {
  display: flex;
  align-items: center;
  gap: var(--hdr-gap);
  flex: 1;
  min-width: 0;
}

/* ── Controls ─────────────────────────────────────────────────── */
input[type="text"] {
  flex: 1;
  min-width: 60px;
  padding: var(--input-padding);
  border-radius: var(--radius);
  border: 1px solid #2d3148;
  background: #0f1117;
  color: #e2e8f0;
  font-size: var(--input-font);
  outline: none;
  transition: border-color 0.2s;
}

input[type="text"]::placeholder { color: #475569; }
input[type="text"]:focus { border-color: #7c9ef8; }

select#studySelect {
  display: none;
  padding: var(--sel-padding);
  border-radius: var(--radius);
  border: 1px solid #2d3148;
  background: #0f1117;
  color: #e2e8f0;
  font-size: var(--sel-font);
  max-width: var(--sel-maxw);
  outline: none;
  cursor: pointer;
  flex-shrink: 0;
  transition: border-color 0.2s;
}

select#studySelect.visible { display: block; }
select#studySelect:focus   { border-color: #7c9ef8; }

button {
  padding: var(--btn-padding);
  border-radius: var(--radius);
  border: none;
  background: #4f6ef7;
  color: #fff;
  font-size: var(--btn-font);
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  transition: background 0.2s;
}

button:hover    { background: #3b5be0; }
button:active   { background: #2e4bc5; }
button:disabled { background: #2d3148; color: #64748b; cursor: default; }

/* ── Status banner ────────────────────────────────────────────── */
.status-banner {
  display: none;
  padding: var(--banner-pad);
  font-size: var(--banner-font);
  color: #94a3b8;
  background: #1a1d27;
  border-bottom: 1px solid #2d3148;
  flex-shrink: 0;
}

.status-banner.visible { display: block; }
.status-banner.loading { color: #f59e0b; }
.status-banner.loaded  { color: #34d399; }
.status-banner.error   { color: #f87171; }

/* ── Viewer ───────────────────────────────────────────────────── */
.viewer-wrap {
  flex: 1;
  position: relative;
  overflow: hidden;
}

#viewer {
  position: absolute;
  top: 0;
  left: 0;
  border: none;
  background: #0f1117;
  display: block;
  transform-origin: top left;
}

.placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  background: #0f1117;
}

.placeholder-logo {
  position: absolute;
  max-width: 60%;
  max-height: 60%;
  object-fit: contain;
  opacity: 0.07;
}

.placeholder-info {
  position: relative;
  z-index: 1;
  width: 80%;
  max-width: 700px;
}

.info-heading {
  text-align: center;
  font-size: 22px;
  font-weight: 700;
  color: #7c9ef8;
  margin-bottom: 28px;
  letter-spacing: 0.5px;
}

.info-items {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.info-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.info-num {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(79, 110, 247, 0.25);
  color: #b4c9ff;
  font-size: 16px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.info-item p {
  font-size: 15px;
  line-height: 1.55;
  color: #cbd5e1;
  padding-top: 5px;
}

body.loaded .placeholder { display: none; }

/* ── Full-screen loading overlay (content.html only) ─────────── */
#addin-loader {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: #0f1117;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 18px;
}

.loader-spinner {
  width: 40px;
  height: 40px;
  border: 4px solid #2d3148;
  border-top-color: #7c9ef8;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.loader-text {
  font-size: 14px;
  color: #64748b;
  letter-spacing: 0.3px;
}

body.ready #addin-loader { display: none; }

/* ── Mobile: 2-row header ─────────────────────────────────────── */
@media (max-width: 600px) {
  .logo        { flex: 0 0 100%; }   /* row 1: logo full width */
  .input-group { flex: 0 0 100%; }   /* row 2: controls full width */
}