:root {
  --bg: #0f172a;
  --panel: #15173e;
  --text: #e5e7eb;
  --accent: #38bdf8;
  --muted: #9ca3af;
}

* {
  box-sizing: border-box;
  font-family: system-ui, sans-serif;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}

header {
  padding: 1rem 2rem;
  background: var(--panel);
  border-bottom: 1px solid #1f2937;
}

main {
  padding: 2rem;
  max-width: 1000px;
  margin: auto;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

button {
  background: #1e293b;
  color: var(--text);
  border: 1px solid #334155;
  padding: 0.4rem 0.7rem;
  margin: 0.2rem;
  border-radius: 6px;
  cursor: pointer;
}

button:hover {
  background: #334155;
}

.card {
  background: var(--panel);
  padding: 1rem;
  border-radius: 10px;
  margin-bottom: 1rem;
}

.card:hover {
  box-shadow: 0 0 10px rgba(6, 20, 221, 0.5);
}

.tag {
  font-size: 0.75rem;
  color: var(--muted);
}




.editor {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.editor-pane {
  display: flex;
  flex-direction: column;
}

.toolbar {
  display: flex;
  gap: 0.3rem;
  padding: 0.4rem;
  background: #020617;
  border: 1px solid #1e293b;
  border-radius: 8px 8px 0 0;
}

.toolbar button {
  width: 32px;
  height: 32px;
  padding: 0;
  font-size: 0.85rem;
  border-radius: 6px;
}


.fiche-editor-preview {
  background: #0f172a;
  border: 5px solid #072f6e;
  border-radius: 10px;
  padding: 1rem;
  min-height: 70vh;
  overflow: auto;
}

.retour {
  display: inline-block;
  margin: 1rem 2rem;
  color: var(--text);
  text-decoration: none;
  font-size: 1.2rem;
}

.print {
  position: absolute;
  top: 1rem;
  right: 2rem;
  background: #1e293b;
  border: 1px solid #334155;
  padding: 0.4rem 0.7rem;
  border-radius: 6px;
  cursor: pointer;
}

.markdown {
  line-height: 1.7;
  padding-bottom: 100px;
  padding-left: 30px;
  width: 850px;
  
}

.markdown h1 {
  font-size: 2rem;
  border-bottom: 2px solid #1e293b;
  padding-bottom: 0.3rem;
}

.markdown h2 {
  margin-top: 1.5rem;
  font-size: 1.5rem;
}

.markdown p {
  margin: 0.7rem 0;
}

.markdown ul {
  padding-left: 1.5rem;
}

.markdown blockquote {
  border-left: 4px solid var(--accent);
  padding-left: 1rem;
  color: var(--muted);
}

.markdown code {
  background: #020617;
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  color: #38bdf8;
}

.markdown pre {
  background: #020617;
  padding: 1rem;
  border-radius: 10px;
  overflow-x: auto;
}

#fileName {
  margin-left: 0.2rem;
  padding: 0.4rem;
  border-radius: 6px;
  border: 1px solid #334155;
  background: #1e293b;
  color: var(--text);
}

.equation-block {
  margin: 1rem 0;
  padding: 0.5rem 0;
  display: flex;
  justify-content: flex-start;
}

.equation-block mjx-container {
  margin: 0 !important;
}

#symbol-picker {
  position: absolute;
  top: 30%;
  left: 10px;
  width: 280px;
  max-height: 260px;

  background: #020617;
  border: 1px solid #1e293b;
  border-radius: 10px;
  padding: 0.4rem;

  display: none;
  flex-direction: column;
  gap: 0.4rem;

  overflow-y: auto;
  z-index: 100;
}

#symbol-picker button:hover {
  background: #1e293b;
}

#symbol-picker.open {
  display: flex;
}

.symbol-category {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.symbol-group {
  font-size: 0.75rem;
  color: var(--muted);
  margin: 0.3rem 0 0.1rem;
}

.symbols {
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem;
}

.symbols button {
  background: #020617;
  border: 1px solid #1e293b;
  border-radius: 6px;
  font-size: 1rem;
  cursor: pointer;
}

.symbols button:hover {
  background: #1e293b;
}



@media (max-width: 900px) {
  .editor {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  header,
  main {
    padding: 1rem;
  }

  #symbol-picker {
    width: 100%;
  }

  .markdown {
    padding: 20px;
  }

  .toolbar {
    flex-wrap: wrap;
    position: sticky;
    top: 0;
    z-index: 10;
  }

  .toolbar button {
    width: 36px;
    height: 36px;
  }

  button {
    min-width: 44px;
    min-height: 44px;
  }

  .fiche-editor-preview {
    min-height: 60vh;
  }

  #fileName {
    width: 100%;
  }
}