/* ===== DESIGN SYSTEM ===== */
:root {
  --bg-color: #0d1117;
  --glass-bg: rgba(22, 27, 34, 0.75);
  --glass-border: rgba(255, 255, 255, 0.08);
  --text-main: #e6edf3;
  --text-muted: #8b949e;
  --primary: #2f81f7;
  --primary-hover: #1f6feb;
  --secondary: #21262d;
  --secondary-hover: #30363d;
  --accent: #238636;
  --accent-hover: #2ea043;
  --danger: #da3633;
  --danger-hover: #b62324;
  --editor-bg: rgba(0, 0, 0, 0.15);
  --toolbar-bg: rgba(255, 255, 255, 0.05);
  --code-bg: rgba(255, 255, 255, 0.1);
  --table-header-bg: rgba(255, 255, 255, 0.05);
  --table-even-bg: rgba(0, 0, 0, 0.2);
  --input-bg: rgba(1, 4, 9, 0.5);
  --grad-1: rgba(47, 129, 247, 0.15);
  --grad-2: rgba(35, 134, 54, 0.15);
  /* Spacing variables */
  --p-margin: 16px;
  --h-top: 24px;
  --h-bottom: 16px;
}

body.light-mode {
  --bg-color: #f6f8fa;
  --glass-bg: rgba(255, 255, 255, 0.85);
  --glass-border: rgba(0, 0, 0, 0.15);
  --text-main: #1F2328;
  --text-muted: #656d76;
  --primary: #0969da;
  --primary-hover: #0349b4;
  --secondary: #ebecf0;
  --secondary-hover: #d0d7de;
  --accent: #1a7f37;
  --accent-hover: #116329;
  --danger: #d1242f;
  --danger-hover: #a40e26;
  --editor-bg: #ffffff;
  --toolbar-bg: rgba(0, 0, 0, 0.03);
  --code-bg: rgba(0, 0, 0, 0.06);
  --table-header-bg: #f6f8fa;
  --table-even-bg: rgba(0, 0, 0, 0.03);
  --input-bg: rgba(255, 255, 255, 0.5);
  --grad-1: rgba(9, 105, 218, 0.08);
  --grad-2: rgba(26, 127, 55, 0.08);
}

/* ===== RESET ===== */
* { box-sizing: border-box; margin: 0; padding: 0; }

/* ===== BODY ===== */
body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-color);
  background-image:
    radial-gradient(at 0% 0%, var(--grad-1) 0px, transparent 50%),
    radial-gradient(at 100% 100%, var(--grad-2) 0px, transparent 50%);
  background-attachment: fixed;
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1.5rem 1rem;
  transition: background-color 0.3s, color 0.3s;
}

/* ===== LAYOUT ===== */
.app-container {
  width: 100%;
  max-width: 1000px;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  padding: 1rem 1.25rem;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  transition: background 0.3s, border-color 0.3s;
}

/* ===== HEADER ===== */
header { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 0.75rem; }
h1 { font-size: 1.35rem; font-weight: 700; display: flex; align-items: center; gap: 0.5rem; color: var(--text-main); }
h1 i { color: var(--primary); }

.header-controls { display: flex; gap: 0.75rem; align-items: center; flex-wrap: wrap; }

.theme-toggle {
  width: 36px; height: 36px; padding: 0 !important;
  border-radius: 50% !important; display: flex !important;
  align-items: center; justify-content: center; font-size: 1rem;
}

.file-input-group {
  display: flex; align-items: center; gap: 0.5rem;
  background: var(--input-bg); padding: 0.45rem 0.75rem;
  border-radius: 6px; border: 1px solid var(--glass-border);
  transition: border-color 0.2s;
}
.file-input-group:focus-within { border-color: var(--primary); }
.file-input-group i { color: var(--text-muted); }
.file-input-group select {
  background: transparent; border: none; color: var(--text-main);
  font-family: 'Inter', sans-serif; font-size: 0.9rem; outline: none;
  cursor: pointer; padding-right: 0.5rem;
}
.file-input-group select option { background-color: var(--bg-color); color: var(--text-main); }

#fileName {
  background: transparent; border: none; color: var(--text-main);
  font-family: 'Inter', sans-serif; font-size: 0.9rem; outline: none;
  width: 280px; transition: width 0.3s ease;
}
#fileName:focus { width: 380px; }
#fileName::placeholder { color: var(--text-muted); }

/* ===== ACTIONS BAR ===== */
.actions-bar { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; padding: 0.65rem 1.25rem; }
.actions-left { display: flex; gap: 0.5rem; margin-right: auto; }
.actions-right { display: flex; gap: 0.5rem; }

/* ===== QUILL OVERRIDES ===== */
.ql-toolbar.ql-snow {
  border: none !important; border-bottom: 1px solid var(--glass-border) !important;
  background: var(--toolbar-bg); border-top-left-radius: 12px;
  border-top-right-radius: 12px; padding: 10px 12px;
  position: sticky; top: 0; z-index: 100;
  transition: box-shadow 0.25s ease, border-radius 0.25s ease, background 0.3s ease;
}
.ql-toolbar.ql-snow.toolbar-floating {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  border-top-left-radius: 0; border-top-right-radius: 0;
  background: var(--glass-bg);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
}
.ql-container.ql-snow {
  border: none !important; border-bottom-left-radius: 12px;
  border-bottom-right-radius: 12px; min-height: 400px;
  font-size: 1.05rem; line-height: 1.6;
}
.ql-editor ul, .ql-editor ol { padding-left: 1.5em !important; }
.ql-editor li { padding-left: 1.5em !important; }
.ql-indent-1 { padding-left: 3em !important; }
.ql-indent-2 { padding-left: 6em !important; }
.ql-indent-3 { padding-left: 9em !important; }
.ql-indent-4 { padding-left: 12em !important; }
.ql-indent-5 { padding-left: 15em !important; }
.ql-indent-6 { padding-left: 18em !important; }
.ql-indent-7 { padding-left: 21em !important; }
.ql-indent-8 { padding-left: 24em !important; }
.ql-editor {
  min-height: 400px; background: var(--editor-bg) !important;
  color: var(--text-main) !important; border-bottom-left-radius: 12px;
  border-bottom-right-radius: 12px;
}
.ql-editor.ql-blank::before { color: var(--text-muted) !important; font-style: normal; }
.ql-editor .ql-code-block-container {
  background-color: var(--secondary) !important; color: var(--text-main) !important;
  border: 1px solid var(--glass-border) !important; border-radius: 6px;
}
.ql-editor code {
  background-color: var(--code-bg) !important; color: var(--primary) !important;
  padding: 0.1em 0.3em; border-radius: 4px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.ql-editor table { border-collapse: collapse; width: 100%; margin: 1rem 0; }
.ql-editor th, .ql-editor td { border: 1px solid var(--glass-border) !important; padding: 0.5rem; }
.ql-editor th { background-color: var(--table-header-bg) !important; font-weight: 600; color: var(--text-main) !important; }
.ql-editor tr:nth-child(even) { background-color: var(--table-even-bg) !important; }

/* DENSITY CONTROLS */
.density-compact { --p-margin: 4px; --h-top: 12px; --h-bottom: 6px; }
.density-standard { --p-margin: 10px; --h-top: 18px; --h-bottom: 10px; }
.density-ample { --p-margin: 16px; --h-top: 24px; --h-bottom: 16px; }

.ql-editor p, .ql-editor blockquote, .ql-editor ul, .ql-editor ol, .ql-editor table, .ql-editor pre, .ql-editor .ql-code-block-container {
  margin-bottom: var(--p-margin) !important;
}
.ql-editor h1, .ql-editor h2, .ql-editor h3 {
  margin-top: var(--h-top) !important;
  margin-bottom: var(--h-bottom) !important;
}
/* HR density */
.ql-editor hr { margin: var(--h-top) 0 !important; }

/* Quill Icons */
.ql-snow .ql-stroke { stroke: var(--text-main) !important; }
.ql-snow .ql-fill, .ql-snow .ql-stroke.ql-fill { fill: var(--text-main) !important; }
.ql-snow .ql-picker { color: var(--text-main) !important; }
.ql-snow .ql-picker-options { background-color: var(--bg-color) !important; border: 1px solid var(--glass-border) !important; border-radius: 6px; }
.ql-snow .ql-picker-item { color: var(--text-main) !important; }
.ql-snow .ql-picker-item:hover, .ql-snow .ql-picker-item.ql-selected { color: var(--primary) !important; }
.ql-snow .ql-picker-label:hover { color: var(--primary) !important; }
.ql-snow .ql-picker.ql-expanded .ql-picker-label { color: var(--text-main) !important; border-color: var(--glass-border) !important; }
button.ql-active .ql-stroke, .ql-picker-label.ql-active .ql-stroke { stroke: var(--primary) !important; }
button.ql-active .ql-fill, .ql-picker-label.ql-active .ql-fill { fill: var(--primary) !important; }

/* Custom toolbar buttons */
.ql-divider, .ql-check-list, .ql-inline-code, .ql-insert-table, .ql-undo, .ql-redo,
.ql-table-add-row, .ql-table-add-col, .ql-table-del-row, .ql-table-del-col {
  width: 28px !important; height: 24px !important;
  padding: 3px 5px !important; cursor: pointer;
}
.ql-divider svg, .ql-check-list svg, .ql-inline-code svg, .ql-insert-table svg, .ql-undo svg, .ql-redo svg,
.ql-table-add-row svg, .ql-table-add-col svg, .ql-table-del-row svg, .ql-table-del-col svg {
  width: 100%; height: 100%;
}
.ql-divider:hover .ql-stroke, .ql-check-list:hover .ql-stroke,
.ql-inline-code:hover .ql-stroke, .ql-insert-table:hover .ql-stroke,
.ql-undo:hover .ql-stroke, .ql-redo:hover .ql-stroke,
.ql-table-add-row:hover .ql-stroke, .ql-table-add-col:hover .ql-stroke { stroke: var(--primary) !important; }
.ql-table-del-row:hover .ql-stroke, .ql-table-del-col:hover .ql-stroke { stroke: var(--danger) !important; }

/* HR nell'editor */
.ql-editor hr {
  border: none;
  height: 3px;
  background: var(--glass-border);
  margin: var(--h-top) 0;
  border-radius: 2px;
}

/* Checklist nell'editor */
.ql-editor li[data-list="checked"]::marker,
.ql-editor li[data-list="unchecked"]::marker { content: none; }

/* ===== BUTTONS ===== */
button {
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.5rem 0.85rem; border: 1px solid transparent; border-radius: 6px;
  font-family: 'Inter', sans-serif; font-size: 0.85rem; font-weight: 500;
  cursor: pointer; color: white; transition: all 0.2s ease; white-space: nowrap;
}
.btn-secondary { background-color: var(--secondary); border-color: var(--glass-border); color: var(--text-main); }
.btn-secondary:hover { background-color: var(--secondary-hover); border-color: var(--text-muted); }
.btn-primary { background-color: var(--primary); }
.btn-primary:hover { background-color: var(--primary-hover); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(47, 129, 247, 0.3); }
.btn-success { background-color: var(--accent); }
.btn-success:hover { background-color: var(--accent-hover); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(35, 134, 54, 0.3); }
.btn-danger { background-color: var(--danger); }
.btn-danger:hover { background-color: var(--danger-hover); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(218, 54, 51, 0.3); }

/* ===== STATUS BAR ===== */
.status-bar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 0.5rem 1.25rem; font-size: 0.8rem; color: var(--text-muted);
}
.status-left { display: flex; gap: 1.25rem; align-items: center; }
.status-item { display: flex; align-items: center; gap: 0.3rem; }

/* ===== TOAST ===== */
.toast-container { position: fixed; top: 1.5rem; right: 1.5rem; z-index: 10000; display: flex; flex-direction: column; gap: 0.5rem; pointer-events: none; }
.toast {
  display: flex; align-items: center; gap: 0.6rem;
  padding: 0.75rem 1.25rem; border-radius: 8px;
  font-family: 'Inter', sans-serif; font-size: 0.9rem; font-weight: 500;
  color: white; box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
  pointer-events: auto; animation: toastIn 0.35s cubic-bezier(0.21, 1.02, 0.73, 1) forwards;
  transform: translateX(120%);
}
.toast.removing { animation: toastOut 0.3s ease forwards; }
.toast-success { background: #238636; }
.toast-info { background: #2f81f7; }
.toast-warning { background: #d29922; }
.toast-error { background: #da3633; }
@keyframes toastIn { from { transform: translateX(120%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }
@keyframes toastOut { from { transform: translateX(0); opacity: 1; } to { transform: translateX(120%); opacity: 0; } }

/* ===== DROP OVERLAY ===== */
.drop-overlay {
  position: fixed; inset: 0; z-index: 9000;
  background: rgba(47, 129, 247, 0.12); backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none; transition: opacity 0.2s ease;
}
.drop-overlay.visible { opacity: 1; pointer-events: auto; }
.drop-overlay-content {
  text-align: center; padding: 3rem 4rem; background: var(--glass-bg);
  border: 2px dashed var(--primary); border-radius: 20px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.3);
}
.drop-overlay-content i { font-size: 3rem; color: var(--primary); margin-bottom: 1rem; display: block; }
.drop-overlay-content p { font-size: 1.2rem; font-weight: 600; color: var(--text-main); }
.drop-overlay-content span { font-size: 0.85rem; color: var(--text-muted); margin-top: 0.5rem; display: block; }

/* ===== MODAL ===== */
.modal-overlay {
  position: fixed; inset: 0; z-index: 9500;
  background: rgba(0, 0, 0, 0.5); backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
  animation: fadeIn 0.2s ease;
}
.modal-box {
  background: var(--glass-bg); border: 1px solid var(--glass-border);
  border-radius: 16px; padding: 2rem; max-width: 420px; width: 90%;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
  animation: modalIn 0.3s cubic-bezier(0.21, 1.02, 0.73, 1);
}
.modal-box h3 { font-size: 1.1rem; font-weight: 600; margin-bottom: 0.75rem; color: var(--text-main); display: flex; align-items: center; gap: 0.5rem; }
.modal-box h3 i { color: var(--primary); }
.modal-box p { font-size: 0.95rem; color: var(--text-muted); line-height: 1.5; margin-bottom: 1.5rem; }
.modal-actions { display: flex; gap: 0.75rem; justify-content: flex-end; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes modalIn { from { transform: scale(0.9) translateY(10px); opacity: 0; } to { transform: scale(1) translateY(0); opacity: 1; } }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  body { padding: 0.75rem 0.5rem; }
  .app-container { gap: 0.5rem; }
  header { flex-direction: column; align-items: flex-start; }
  .header-controls { width: 100%; }
  .file-input-group { flex: 1; }
  #fileName, #fileName:focus { width: 100%; }
  .actions-bar { flex-direction: column; align-items: stretch; }
  .actions-left, .actions-right { justify-content: center; margin-right: 0; }
  .ql-container.ql-snow, .ql-editor { min-height: 300px; }
  .status-bar { flex-direction: column; align-items: flex-start; gap: 0.25rem; }
}

/* Patch: prima riga di ogni tabella mostrata come intestazione */
.ql-editor table tr:first-child td {
  font-weight: 700;
  background-color: var(--table-header-bg) !important;
  color: var(--text-main) !important;
}