:root{
  --bg1:#ff9a9e;
  --bg2:#c94bff;
  --accent:#9c27b0;
  --accent-2:#7b1fa2;
  --card:#ffffff;
  --muted:#6b6b6b;
  --danger:#e53935;
  --radius:15px;
  --shadow-desktop: 0 12px 30px rgba(0,0,0,0.18);
  --shadow-mobile: 0 6px 14px rgba(0,0,0,0.12);
  --header-height:72px;
  --input-height:96px;
  --touch-size:48px;
}

/* Reset */
*{box-sizing:border-box}
html,body{height:100%;margin:0;font-family:Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;-webkit-text-size-adjust:100%}
.visually-hidden{position:absolute!important;height:1px;width:1px;overflow:hidden;clip:rect(1px,1px,1px,1px);white-space:nowrap}

/* Background and container */
body{
  background: linear-gradient(135deg, var(--bg1) 0%, #d16ba5 40%, var(--bg2) 100%);
  min-height:100vh;
  margin:0;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:12px;
}
.todo-app{
  width:100%;
  height:calc(100vh - 24px);
  max-width:1400px;
  background: linear-gradient(180deg, rgba(255,255,255,0.98), rgba(255,255,255,0.95));
  border-radius:var(--radius);
  padding:14px;
  box-shadow:var(--shadow-desktop);
  display:flex;
  flex-direction:column;
  gap:10px;
  overflow:hidden;
}

/* Header centered and slightly larger */
.app-header{
  height:var(--header-height);
  min-height:var(--header-height);
  display:flex;
  align-items:center;
  justify-content:center;
  flex:0 0 auto;
}
.app-header h1{margin:0;color:var(--accent);font-size:26px;text-align:center;line-height:1}

/* Input area fixed */
.input-area{
  height:var(--input-height);
  min-height:var(--input-height);
  display:flex;
  flex-direction:column;
  gap:3px;
  flex:0 0 auto;
}
.row{display:flex;gap:8px;align-items:center}
.top-row{flex-wrap:wrap}
.bottom-row{justify-content:space-between;align-items:center}

/* Category controls */
.category-wrap{display:flex;gap:8px;align-items:center;min-width:220px;position:relative}
#categoryInput{padding:12px;border-radius:10px;border:1px solid rgba(0,0,0,0.06);background:#fff;min-width:160px;font-size:16px}
.picked-category{display:inline-flex;align-items:center;gap:8px;padding:6px 8px;border-radius:999px;background:rgba(0,0,0,0.06);font-size:13px}
.picked-category .remove{cursor:pointer;padding:6px;border-radius:6px;background:rgba(0,0,0,0.06)}

/* Category dropdown (custom) */
.category-dropdown{
  position:absolute;
  top:calc(100% + 6px);
  left:0;
  right:0;
  max-height:260px;
  overflow:auto;
  background:#fff;
  border:1px solid rgba(0,0,0,0.08);
  border-radius:10px;
  box-shadow:var(--shadow-desktop);
  z-index:40;
  padding:6px;
}
.category-item{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:8px;
  padding:12px;
  border-radius:8px;
  cursor:pointer;
  font-size:10px;
}
.category-item:hover{background:rgba(0,0,0,0.03)}
.category-item .label{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.category-item .remove-cat{background:transparent;border:none;color:#b00;font-weight:700;cursor:pointer;padding:8px;border-radius:6px}

/* Inputs and touch targets */
.input-area input[type="text"], .input-area input[type="date"], .input-area select{
  padding:12px 14px;border-radius:10px;border:1px solid rgba(0,0,0,0.06);background:#fff;flex:1;min-width:120px;font-size:16px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.04);
  height:var(--touch-size);
}
.input-area input[type="date"]{max-width:160px}
.input-area select{max-width:160px}

/* Buttons */
.btn{padding:10px 14px;border-radius:15px;border:1px solid rgba(0,0,0,0.06);background:#fff;cursor:pointer;font-weight:700;font-size:16px;min-height:var(--touch-size)}
.btn.primary{background:linear-gradient(90deg,var(--accent),var(--accent-2));color:#fff;border:none}
.btn.danger{background:var(--danger);color:#fff;border:none}

/* Controls */
.controls{display:flex;justify-content:space-between;align-items:center;margin-bottom:0;gap:8px;flex-wrap:wrap}
.filters{display:flex;gap:6px}
.filter{padding:8px 12px;border-radius:10px;border:none;background:transparent;color:var(--muted);cursor:pointer;font-weight:600}
.filter.active{background:linear-gradient(90deg,var(--accent),var(--accent-2));color:#fff}

/* Search */
#searchInput{width:100%;padding:12px;border-radius:10px;border:1px solid rgba(0,0,0,0.06);font-size:16px;height:48px}

/* Task list area grows and scrolls */
.task-list{list-style:none;padding:12px;margin:0;flex:1 1 auto;overflow:auto;display:flex;flex-direction:column;gap:10px;-webkit-overflow-scrolling:touch}
.task{
  display:flex;align-items:center;justify-content:space-between;padding:12px;border-radius:12px;background:linear-gradient(90deg,#f8f0fb,#fff);
  border:1px solid rgba(0,0,0,0.03);box-shadow:var(--shadow-desktop);
}
.task.completed{opacity:0.8;text-decoration:line-through;background:#f0f6f8}
.task.overdue{border-left:4px solid var(--danger)}
.left{display:flex;align-items:flex-start;gap:12px;min-width:0}
.checkbox{width:44px;height:44px;border-radius:10px;border:2px solid #ddd;display:flex;align-items:center;justify-content:center;font-weight:700;color:#fff;cursor:pointer;background:transparent;font-size:18px}
.checkbox.checked{background:linear-gradient(90deg,var(--accent),var(--accent-2));border:none}

/* Three-line info block; each line scrolls horizontally when too long */
.info-block{
  display:flex;
  flex-direction:column;
  gap:6px;
  min-width:0;
  width:100%;
}
.info-line{
  display:block;
  overflow-x:auto;
  white-space:nowrap;
  -webkit-overflow-scrolling:touch;
  padding-right:6px;
}
.info-line::-webkit-scrollbar{height:8px}
.info-line::-webkit-scrollbar-thumb{background:rgba(0,0,0,0.12);border-radius:6px}

/* Line 1: title + category + priority */
.line-title{display:flex;align-items:center;gap:8px}
.title{font-weight:700;white-space:nowrap;display:inline-block;font-size:16px}
.cat-badge{display:inline-block;padding:6px 10px;border-radius:999px;font-size:13px;color:#fff;margin-left:8px;vertical-align:middle;white-space:nowrap}
.priority-badge{display:inline-block;padding:6px 10px;border-radius:8px;font-size:13px;color:#fff;margin-left:8px;vertical-align:middle;white-space:nowrap}
.priority-high{background:#d32f2f}
.priority-medium{background:#f57c00}
.priority-low{background:#04cc29}

/* Line 2: due date & created */
.line-meta{font-size:13px;color:var(--muted)}

/* Line 3: remarks */
.line-remarks{font-size:13px;color:#333;background:rgba(0,0,0,0.03);padding:8px;border-radius:8px;display:inline-block}

/* Actions with SVG icons */
.actions{display:flex;gap:8px;align-items:center}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;padding:10px;border-radius:10px;border:1px solid rgba(0,0,0,0.06);background:#fff;cursor:pointer}
.icon-btn svg{width:18px;height:18px;display:block}

/* Footer */
.footer{display:flex;justify-content:space-between;align-items:center;margin-top:12px;color:#444;font-size:14px;gap:8px;flex-wrap:wrap}
.footer-actions{display:flex;gap:8px}

/* Modal */
.modal{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,0.35);z-index:50}
.modal.hidden{display:none}
.modal-content{background:#fff;padding:16px;border-radius:12px;width:360px;box-shadow:0 12px 40px rgba(0,0,0,0.28)}
.modal-content input, .modal-content select{width:100%;padding:10px;margin:6px 0;border-radius:8px;border:1px solid rgba(0,0,0,0.06);font-size:16px}

/* Mobile adjustments */
@media (max-width:880px){
  .todo-app{padding:12px;box-shadow:var(--shadow-mobile)}
  .category-dropdown{max-height:200px;box-shadow:var(--shadow-mobile)}
}
@media (max-width:520px){
  .app-header{height:64px}
  .input-area{height:auto}
  .top-row{flex-direction:column;align-items:stretch}
  .bottom-row{flex-direction:column;gap:10px;align-items:stretch}
  .category-wrap{width:100%}
  .task{padding:10px;box-shadow:var(--shadow-mobile)}
  .checkbox{width:44px;height:44px}
  .btn{min-height:48px}
  .app-header h1{font-size:22px}
}

/* small shake for empty add feedback */
@keyframes shake {
  0%{transform:translateX(0)}
  25%{transform:translateX(-6px)}
  50%{transform:translateX(6px)}
  75%{transform:translateX(-4px)}
  100%{transform:translateX(0)}
}
.shake{animation:shake 260ms ease}
.hidden{display:none}