/* === RESET & BASE === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #0f0e17;
  --bg2:       #1a1929;
  --bg3:       #232236;
  --line:      #2e2d45;
  --accent:    #e2a84b;
  --accent2:   #c97b38;
  --text:      #e8e6f0;
  --text2:     #9e9cb8;
  --text3:     #5e5c78;
  --white:     #f5f3ff;
  --danger:    #e05c5c;
  --score-bg:  #faf8f2;

  --font-serif: 'Cormorant Garamond', Georgia, serif;
  --font-mono:  'JetBrains Mono', monospace;

  --radius: 6px;
  --shadow: 0 4px 24px rgba(0,0,0,.45);
  --transition: .18s ease;
}

html, body { height: 100%; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-serif);
  font-size: 17px;
  line-height: 1.5;
  height: 100%;
  overflow: hidden;
}

/* === LAYOUT === */
#app {
  display: flex;
  flex-direction: column;
  height: 100%;
}

/* === MAIN === */
#main {
  flex: 1;
  min-height: 0;
  display: flex;
  align-items: stretch;
  position: relative;
}

/* === DROP ZONE === */
.drop-zone {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  cursor: pointer;
  position: relative;
  outline: none;
}

.drop-zone::before {
  content: '';
  position: absolute;
  inset: 2rem;
  border: 1px dashed var(--line);
  border-radius: 16px;
  transition: var(--transition);
  pointer-events: none;
}

.drop-zone:hover::before,
.drop-zone.drag-over::before {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent) inset, 0 0 60px rgba(226,168,75,.08);
}

.drop-zone.drag-over {
  background: rgba(226,168,75,.04);
}

.drop-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  text-align: center;
  pointer-events: none;
}

.drop-icon {
  font-size: 5rem;
  line-height: 1;
  color: var(--accent);
  opacity: .6;
  font-family: serif;
  animation: float 4s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-8px); }
}

.drop-title {
  font-size: 1.8rem;
  font-weight: 300;
  font-style: italic;
  color: var(--white);
  letter-spacing: .02em;
}

.drop-sub {
  font-size: 1rem;
  color: var(--text2);
  font-style: italic;
}

.drop-formats {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--text3);
  letter-spacing: .12em;
  text-transform: uppercase;
}

.btn-open {
  margin-top: .5rem;
  padding: .6rem 1.8rem;
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
  border-radius: var(--radius);
  font-family: var(--font-serif);
  font-size: 1rem;
  font-style: italic;
  letter-spacing: .05em;
  cursor: pointer;
  pointer-events: all;
  transition: var(--transition);
}

.btn-open:hover {
  background: var(--accent);
  color: var(--bg);
}

/* === SCORE CONTAINER === */
.score-container {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.verovio-output {
  flex: 1;
  min-height: 0;
  overflow: auto;
  background: var(--score-bg);
  display: block;
  padding: 0;
}

.page-wrapper {
  display: inline-block;
  width: auto;
  vertical-align: top;
  margin: 0;
}

.verovio-output svg {
  display: block;
  max-width: 100%;
  filter: drop-shadow(0 2px 12px rgba(0,0,0,.15));
}

/* Scrollbar styling for score area */
.verovio-output::-webkit-scrollbar { width: 8px; }
.verovio-output::-webkit-scrollbar-track { background: var(--score-bg); }
.verovio-output::-webkit-scrollbar-thumb { background: #ccc; border-radius: 4px; }

/* === LOADING === */
.loading {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  gap: 1.5rem;
  z-index: 50;
}

.loading-spinner {
  width: 48px;
  height: 48px;
  border: 2px solid var(--line);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

.loading-text {
  font-style: italic;
  color: var(--text2);
  font-size: .95rem;
  letter-spacing: .05em;
}

/* === ERROR === */
.error-box {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 2rem;
  background: var(--bg);
}

.error-icon {
  font-size: 2.5rem;
  color: var(--danger);
}

.error-msg {
  color: var(--text2);
  font-style: italic;
  text-align: center;
  max-width: 400px;
  font-size: .95rem;
}

/* === BOTTOM BAR === */
#bottom-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--bg2);
  border-top: 1px solid var(--line);
  font-size: .8rem;
  color: var(--text3);
}

.page-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-left: 1rem;
}

.footer-spacer {
  flex: 1;
}

.icon-btn {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--text2);
  border-radius: var(--radius);
  width: 34px;
  height: 34px;
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  font-family: var(--font-mono);
}

.icon-btn:hover:not(:disabled) {
  background: var(--bg3);
  border-color: var(--accent);
  color: var(--accent);
}

.icon-btn:disabled {
  opacity: .3;
  cursor: not-allowed;
}

.zoom-label {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--text3);
  min-width: 40px;
  text-align: center;
}

.footer-link {
  background: none;
  border: none;
  color: var(--accent);
  font-family: var(--font-serif);
  font-size: .85rem;
  font-style: italic;
  cursor: pointer;
  padding: 0;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: var(--transition);
}

.footer-link:hover { color: var(--accent2); }

/* === TOAST === */
.toast {
  position: fixed;
  bottom: 60px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--bg3);
  border: 1px solid var(--line);
  color: var(--text);
  padding: .6rem 1.4rem;
  border-radius: 24px;
  font-size: .85rem;
  font-style: italic;
  pointer-events: none;
  opacity: 0;
  transition: opacity .2s, transform .2s;
  z-index: 200;
  white-space: nowrap;
}

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

/* === UTILITIES === */
.hidden { display: none !important; }

/* === RESPONSIVE === */
@media (max-width: 600px) {
  .drop-icon { font-size: 3.5rem; }
  .drop-title { font-size: 1.4rem; }
  .icon-btn { width: 30px; height: 30px; }
}