:root{
  --bg: #0b0d12;
  --panel: rgba(255,255,255,.06);
  --panel2: rgba(255,255,255,.08);
  --text: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.72);
  --border: rgba(255,255,255,.14);
  --focus: rgba(124, 210, 255, .55);
  --danger: #ff4d4f;
  --primary: #3aa0ff;
  --shadow: 0 10px 30px rgba(0,0,0,.28);
  --cell: 180px;
  --radius: 14px;
  --gap: 14px;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  --cell-bg: rgba(255,255,255,.86);
  --cell-head-bg: rgba(0,0,0,.06);
  --cell-text: rgba(0,0,0,.84);
  --cell-head-text: rgba(0,0,0,.84);
  --cell-font-size: 13px;
  --cell-font-family: var(--font);
}

*{ box-sizing: border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: var(--font);
  color: var(--text);
  background: radial-gradient(1200px 700px at 20% 10%, rgba(58,160,255,.35), transparent 60%),
              radial-gradient(900px 600px at 80% 0%, rgba(255,153,0,.22), transparent 55%),
              radial-gradient(700px 600px at 70% 85%, rgba(173, 93, 255,.22), transparent 55%),
              var(--bg);
}

.app{
  max-width: 1280px;
  margin: 0 auto;
  padding: 18px 18px 26px;
}

.topbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 12px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.04));
  box-shadow: var(--shadow);
}

.brand__title{ font-size: 18px; font-weight: 760; letter-spacing: .4px; }
.brand__sub{ font-size: 12px; color: var(--muted); margin-top: 2px; }

.layout{
  margin-top: 14px;
  display:grid;
  grid-template-columns: 370px 1fr;
  gap: var(--gap);
  align-items:start;
}

.panel{
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
  box-shadow: var(--shadow);
  padding: 14px;
}

.panel__header{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap: 10px;
}

.panel__title{
  font-size: 14px;
  font-weight: 740;
  margin: 0 0 10px;
  letter-spacing: .2px;
}

.panel__divider{
  height: 1px;
  background: var(--border);
  margin: 14px 0;
}

.field{ margin-bottom: 12px; }
.field__label{
  display:block;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 6px;
}

.field__control{
  width: 100%;
  border-radius: 12px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  background: rgba(0,0,0,.22);
  color: var(--text);
  outline: none;
}
.field__control:focus{
  border-color: var(--focus);
  box-shadow: 0 0 0 4px rgba(124, 210, 255, .16);
}
.field__help{
  margin-top: 8px;
  font-size: 12px;
  color: rgba(255,255,255,.65);
  line-height: 1.35;
}

.grid2{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.actions{
  display:flex;
  gap: 10px;
  flex-wrap: wrap;
}
.actions--tight{ gap: 8px; margin-top: 10px; }

.btn{
  border: 1px solid var(--border);
  background: rgba(255,255,255,.06);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 12px;
  cursor:pointer;
  font-weight: 650;
  letter-spacing: .2px;
}
.btn:hover{ background: rgba(255,255,255,.09); }
.btn:active{ transform: translateY(1px); }
.btn--ghost{ background: rgba(0,0,0,.16); }
.btn--primary{
  background: linear-gradient(180deg, rgba(58,160,255,.9), rgba(58,160,255,.68));
  border-color: rgba(58,160,255,.9);
}
.btn--danger{
  background: rgba(255,77,79,.12);
  border-color: rgba(255,77,79,.6);
  color: rgba(255,255,255,.95);
}

.saved{ display:flex; flex-direction:column; gap: 10px; }
.status{
  margin-top: 12px;
  min-height: 18px;
  font-size: 12px;
  color: rgba(255,255,255,.72);
}

.preview{
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
  box-shadow: var(--shadow);
  overflow: hidden;
}

.preview__header{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap: 12px;
  padding: 14px 14px 10px;
  border-bottom: 1px solid var(--border);
}
.preview__meta{
  font-size: 12px;
  color: rgba(255,255,255,.66);
}

.print-area{
  position: relative;
  padding: 16px;
  min-height: 620px;
}
.bg-layer{
  position:absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: .9;
  pointer-events: none;
  filter: saturate(1.05) contrast(1.02);
}

.calendar{
  position: relative;
  display:grid;
  gap: 10px;
  grid-template-columns: repeat(auto-fill, minmax(var(--cell), 1fr));
  align-items: stretch;
}

.cell{
  border: 1px solid rgba(0,0,0,.14);
  background: var(--cell-bg);
  border-radius: 14px;
  overflow:hidden;
  min-height: var(--cell);
  display:flex;
  flex-direction:column;
}

.cell__head{
  padding: 10px 12px;
  background: var(--cell-head-bg);
  border-bottom: 1px solid rgba(0,0,0,.10);
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap: 10px;
  color: var(--cell-head-text);
  font-weight: 760;
}
.cell__dow{
  font-weight: 650;
  font-size: 12px;
  opacity: .76;
}

.cell__body{
  padding: 10px 12px 12px;
  flex: 1;
  display:flex;
}

.cell__text{
  width: 100%;
  resize: none;
  border: none;
  outline: none;
  background: transparent;
  color: var(--cell-text);
  font-family: var(--cell-font-family);
  font-size: var(--cell-font-size);
  line-height: 1.3;
}

.is-hidden{ display:none !important; }

@media (max-width: 1000px){
  .layout{ grid-template-columns: 1fr; }
}

@media print{
  body{ background: #fff; }
  .app{ max-width: none; padding: 0; }
  .topbar, .panel, .preview__header{ display:none !important; }
  .preview{
    border: none;
    border-radius: 0;
    box-shadow: none;
  }
  .print-area{
    padding: 0;
    min-height: 0;
  }
  .bg-layer{ opacity: 1; filter: none; }
  .calendar{ gap: 8px; padding: 12px; }
  .cell{
    break-inside: avoid;
    border: 1px solid rgba(0,0,0,.25);
  }
}