/* ============================
   TASKFLOW — style.css
   ============================ */

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

/* CSS Variables */
:root {
  --bg:       #0f1117;
  --surface:  #181b24;
  --surface2: #1f2330;
  --border:   #2a2e3d;
  --text:     #e8eaf0;
  --muted:    #6b7280;
  --accent:   #f5a623;
  --accent2:  #e8934a;
  --high:     #ef4444;
  --med:      #f59e0b;
  --low:      #22c55e;
  --work:     #818cf8;
  --personal: #34d399;
  --health:   #fb7185;
  --shopping: #60a5fa;
  --reminder: #a78bfa;
  --reminder-bg: #1a1530;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  min-height: 100vh;
  padding: 2rem 1rem;
  display: flex;
  justify-content: center;
}

.app {
  width: 100%;
  max-width: 680px;
}

/* ---- Header ---- */
header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 2rem;
}

h1 {
  font-family: 'Syne', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text);
}

h1 span {
  color: var(--accent);
}

.date {
  font-size: 0.8rem;
  color: var(--muted);
}

/* ---- Stats ---- */
.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 1.5rem;
}

.stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem;
  text-align: center;
}

.stat-num {
  font-family: 'Syne', sans-serif;
  font-size: 1.8rem;
  font-weight: 700;
  line-height: 1;
}

#s-done { color: var(--low); }
#s-left { color: var(--accent); }

.stat-label {
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ---- Progress Bar ---- */
.progress-bar {
  background: var(--surface);
  border-radius: 100px;
  height: 6px;
  margin-bottom: 1.5rem;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  border-radius: 100px;
  transition: width 0.5s ease;
}

/* ---- Add Form ---- */
.add-form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.25rem;
  margin-bottom: 1rem;
}

.add-row1 {
  display: flex;
  gap: 10px;
  margin-bottom: 10px;
}

.add-row1 input {
  flex: 1;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 14px;
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s;
}

.add-row1 input:focus {
  border-color: var(--accent);
}

.add-row2 {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}

.add-row2 select,
.add-row2 input[type="date"],
.add-row2 input[type="time"] {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 7px 10px;
  color: var(--text);
  font-size: 0.82rem;
  font-family: 'DM Sans', sans-serif;
  outline: none;
  cursor: pointer;
  transition: border-color 0.2s;
}

.add-row2 input[type="time"] {
  border-color: var(--reminder);
  color: var(--reminder);
}

.add-row2 input[type="time"]:focus {
  border-color: var(--reminder);
  box-shadow: 0 0 0 2px rgba(167,139,250,0.2);
}

.add-row2 input[type="date"]::-webkit-calendar-picker-indicator,
.add-row2 input[type="time"]::-webkit-calendar-picker-indicator {
  filter: invert(0.6);
}

.btn-add {
  background: var(--accent);
  color: #0f1117;
  border: none;
  border-radius: 10px;
  padding: 10px 22px;
  font-family: 'Syne', sans-serif;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.btn-add:hover {
  background: var(--accent2);
  transform: translateY(-1px);
}

/* ---- Toolbar ---- */
.toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.search {
  flex: 1;
  min-width: 140px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 14px 8px 36px;
  color: var(--text);
  font-size: 0.88rem;
  font-family: 'DM Sans', sans-serif;
  outline: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%236b7280'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M21 21l-6-6m2-5a7 7 0 11-14 0 7 7 0 0114 0z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: 10px center;
  background-size: 16px;
}

.search:focus {
  border-color: var(--accent);
}

.filter-tabs {
  display: flex;
  gap: 4px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 4px;
}

.tab {
  padding: 5px 14px;
  border-radius: 7px;
  border: none;
  background: none;
  color: var(--muted);
  font-size: 0.82rem;
  font-family: 'DM Sans', sans-serif;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.tab.active {
  background: var(--accent);
  color: #0f1117;
  font-weight: 500;
}

.sort-select {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 10px;
  color: var(--muted);
  font-size: 0.82rem;
  font-family: 'DM Sans', sans-serif;
  outline: none;
  cursor: pointer;
}

/* ---- Todo List ---- */
.todo-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.todo-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: all 0.2s;
  cursor: grab;
  position: relative;
  overflow: hidden;
}

.todo-item:hover {
  border-color: #3a3e4d;
  background: var(--surface2);
}

.todo-item.has-reminder {
  border-color: rgba(167,139,250,0.25);
}

.todo-item.dragging {
  opacity: 0.4;
}

.todo-item.drag-over {
  border-color: var(--accent);
}

/* Priority Sidebar */
.priority-bar {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
}

.priority-bar.high   { background: var(--high); }
.priority-bar.medium { background: var(--med); }
.priority-bar.low    { background: var(--low); }

/* Checkbox */
.checkbox {
  width: 20px;
  height: 20px;
  border-radius: 6px;
  border: 2px solid var(--border);
  cursor: pointer;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  background: none;
}

.checkbox.checked {
  background: var(--accent);
  border-color: var(--accent);
}

.checkbox.checked::after {
  content: '✓';
  color: #0f1117;
  font-size: 13px;
  font-weight: 700;
  line-height: 1;
}

/* Todo Content */
.todo-content {
  flex: 1;
  min-width: 0;
}

.todo-text {
  font-size: 0.93rem;
  line-height: 1.4;
  word-break: break-word;
  transition: all 0.2s;
}

.todo-text.done {
  text-decoration: line-through;
  color: var(--muted);
}

.todo-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 5px;
  flex-wrap: wrap;
}

/* Category Tags */
.tag {
  padding: 2px 8px;
  border-radius: 100px;
  font-size: 0.7rem;
  font-weight: 500;
}

.tag.work     { background: #1e1f3b; color: var(--work); }
.tag.personal { background: #0e2a20; color: var(--personal); }
.tag.health   { background: #2a111a; color: var(--health); }
.tag.shopping { background: #0f1e32; color: var(--shopping); }

/* Due Date */
.due-date {
  font-size: 0.72rem;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 3px;
}

.due-date.overdue { color: var(--high); }

/* Reminder Badge */
.reminder-badge {
  font-size: 0.7rem;
  padding: 2px 7px;
  border-radius: 100px;
  background: var(--reminder-bg);
  color: var(--reminder);
  display: flex;
  align-items: center;
  gap: 3px;
}

/* Priority Badge */
.priority-badge {
  font-size: 0.7rem;
  padding: 2px 7px;
  border-radius: 100px;
}

.priority-badge.high   { background: #2a1111; color: var(--high); }
.priority-badge.medium { background: #2a1e0a; color: var(--med); }
.priority-badge.low    { background: #0a2010; color: var(--low); }

/* Action Buttons */
.todo-actions {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
  opacity: 0;
  transition: opacity 0.2s;
}

.todo-item:hover .todo-actions {
  opacity: 1;
}

.action-btn {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 5px 10px;
  color: var(--muted);
  font-size: 0.78rem;
  font-family: 'DM Sans', sans-serif;
  cursor: pointer;
  transition: all 0.2s;
}

.action-btn:hover        { color: var(--text); border-color: var(--accent); }
.action-btn.del:hover    { color: var(--high); border-color: var(--high); }

/* Empty State */
.empty {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--muted);
}

.empty-icon {
  font-size: 2.5rem;
  margin-bottom: 0.75rem;
  opacity: 0.4;
}

/* Bottom Bar */
.bottom-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.bottom-info {
  font-size: 0.8rem;
  color: var(--muted);
}

.btn-clear {
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 14px;
  color: var(--muted);
  font-size: 0.8rem;
  font-family: 'DM Sans', sans-serif;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-clear:hover {
  border-color: var(--high);
  color: var(--high);
}

/* ---- Reminder Toast ---- */
.reminder-toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: #1e1a30;
  border: 1px solid var(--reminder);
  border-radius: 14px;
  padding: 1rem 1.2rem;
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 280px;
  max-width: 360px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4), 0 0 20px rgba(167,139,250,0.15);
  transform: translateY(120px);
  opacity: 0;
  transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  z-index: 9999;
  pointer-events: none;
}

.reminder-toast.show {
  transform: translateY(0);
  opacity: 1;
  pointer-events: all;
}

.toast-icon {
  font-size: 1.6rem;
  animation: bell-shake 0.5s ease 0.4s;
}

@keyframes bell-shake {
  0%, 100% { transform: rotate(0); }
  25%       { transform: rotate(-20deg); }
  75%       { transform: rotate(20deg); }
}

.toast-body {
  flex: 1;
}

.toast-title {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--reminder);
  margin-bottom: 2px;
}

.toast-msg {
  font-size: 0.82rem;
  color: var(--text);
  line-height: 1.4;
}

.toast-close {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.8rem;
  padding: 4px;
  transition: color 0.2s;
  flex-shrink: 0;
}

.toast-close:hover {
  color: var(--text);
}

/* Slide-in animation for new tasks */
@keyframes slideIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.new-item {
  animation: slideIn 0.3s ease forwards;
}

/* ---- Responsive ---- */
@media (max-width: 480px) {
  body { padding: 1rem 0.75rem; }
  h1   { font-size: 1.6rem; }

  .add-row1 { flex-direction: column; }
  .btn-add  { width: 100%; }

  .toolbar  { flex-direction: column; align-items: stretch; }
  .search   { width: 100%; }

  .todo-actions { opacity: 1; }

  .reminder-toast {
    bottom: 1rem;
    right: 1rem;
    left: 1rem;
    min-width: unset;
  }
}