*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg-darkest: #2a2a2a; --bg-dark: #3a3a3a; --bg-mid: #4a4a4a;
  --bg-light: #5a5a5a; --bg-lighter: #6a6a6a; --bg-lightest: #7a7a7a;
  --text-white: #ffffff; --text-light: #e5e7eb; --text-muted: #d1d5db; --text-dim: #9ca3af;
  --blue: #3b82f6; --blue-dark: #2563eb; --green: #10b981;
  --amber: #f59e0b; --amber-light: #fcd34d; --red: #ef4444; --gray-badge: #4b5563;
  --radius-sm: 0.25rem; --radius-md: 0.5rem; --radius-lg: 1.5rem; --radius-full: 9999px;
  --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
}
html, body { height: 100%; font-family: var(--font); background: var(--bg-darkest); color: var(--text-white); }
input[type="time"]::-webkit-calendar-picker-indicator { filter: invert(1); }
button { font-family: var(--font); cursor: pointer; }
input, select, textarea { font-family: var(--font); }
.sidebar { width: 14rem; background: var(--bg-dark); padding: 1.5rem; display: flex; flex-direction: column; height: 100vh; flex-shrink: 0; position: sticky; top: 0; }
.sidebar__title { color: var(--text-white); font-size: 1.25rem; font-weight: 600; margin-bottom: 2rem; text-align: left; background: none; border: none; cursor: pointer; padding: 0; }
.sidebar__user { display: flex; align-items: center; gap: 0.75rem; color: var(--text-white); font-size: 0.875rem; margin-bottom: 1.5rem; }
.sidebar__avatar { width: 1.75rem; height: 1.75rem; background: var(--text-dim); border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.sidebar__btn { display: flex; align-items: center; gap: 0.75rem; color: var(--text-white); font-size: 0.875rem; margin-bottom: 1rem; background: var(--bg-light); border: none; padding: 0.5rem 0.75rem; border-radius: var(--radius-sm); width: 100%; text-align: left; transition: background 0.15s; }
.sidebar__btn:hover { background: var(--bg-lighter); }
.sidebar__btn--active { background: var(--bg-mid); }
.sidebar__section-label { color: var(--text-muted, rgba(255,255,255,0.5)); font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 0.5rem; padding: 0 0.25rem; }
.sidebar__toggle { display: flex; gap: 0.25rem; margin-bottom: 1.25rem; background: var(--bg-light); border-radius: var(--radius-sm); padding: 0.2rem; }
.sidebar__toggle-btn { flex: 1; border: none; padding: 0.35rem 0.5rem; border-radius: 4px; font-size: 0.8rem; font-weight: 600; color: rgba(255,255,255,0.6); background: transparent; cursor: pointer; transition: background 0.15s, color 0.15s; }
.sidebar__toggle-btn--active { background: var(--bg-mid); color: #fff; }
.app-layout { display: flex; min-height: 100vh; }
.main-content { flex: 1; padding: 1.5rem; overflow: auto; display: flex; flex-direction: column; }
.btn { border: none; padding: 0.75rem 1.5rem; border-radius: var(--radius-md); font-weight: bold; font-size: 1rem; transition: opacity 0.15s, transform 0.1s; }
.btn:hover { opacity: 0.9; } .btn:active { transform: scale(0.98); }
.btn--blue { background: var(--blue); color: white; } .btn--green { background: var(--green); color: white; }
.btn--amber { background: var(--amber); color: white; } .btn--red { background: var(--red); color: white; }
.btn--gray { background: var(--bg-light); color: white; } .btn--sm { padding: 0.5rem 0.75rem; font-size: 0.875rem; }
.btn--icon { padding: 0.5rem; border-radius: var(--radius-sm); } .btn--full { width: 100%; } .btn--pill { border-radius: var(--radius-full); }
.form-card { background: var(--bg-lightest); border-radius: var(--radius-md); padding: 1.5rem; margin-bottom: 1.5rem; border: 2px solid var(--text-dim); }
.form-row { display: flex; gap: 1rem; margin-bottom: 1rem; }
.form-group { flex: 1; display: flex; flex-direction: column; gap: 0.25rem; }
.form-label { color: var(--text-white); font-size: 0.875rem; }
.form-input { width: 100%; padding: 0.5rem 0.75rem; border-radius: var(--radius-sm); border: none; color: #111; font-size: 1rem; }
.form-input--full { padding: 0.75rem 1rem; margin-bottom: 1rem; }
.tab-group { display: flex; gap: 0.5rem; margin-bottom: 1rem; }
.tab-btn { flex: 1; padding: 0.5rem; border-radius: var(--radius-sm); border: none; cursor: pointer; font-weight: bold; transition: background 0.15s, color 0.15s; }
.tab-btn--gray { background: var(--gray-badge); color: white; } .tab-btn--blue { background: var(--blue); color: white; } .tab-btn--inactive { background: #d1d5db; color: black; }
.tab-btn-outline { flex: 1; padding: 0.4rem; border-radius: var(--radius-sm); border: 1px solid var(--blue); cursor: pointer; font-size: 0.875rem; transition: background 0.15s; }
.tab-btn-outline--active { background: var(--blue); color: white; } .tab-btn-outline--inactive { background: transparent; color: white; }
.task-item { background: var(--task-color, var(--blue)); color: white; border-radius: var(--radius-md); padding: 1rem; display: flex; align-items: center; justify-content: space-between; margin-bottom: 0.75rem; }
.task-item--routine { background: var(--gray-badge); }
.task-item { background: var(--task-color, var(--blue)); color: white; border-radius: var(--radius-md); padding: 1rem; display: flex; align-items: center; justify-content: space-between; margin-bottom: 0.75rem; text-shadow: 0 1px 2px rgba(0,0,0,0.2); }
.task-badge { font-size: 0.75rem; padding: 0.1rem 0.4rem; background: rgba(255,255,255,0.15); border-radius: var(--radius-sm); text-transform: uppercase; font-weight: bold; margin-right: 0.5rem; border: 1px solid rgba(255,255,255,0.2); }
.task-meta { font-size: 0.875rem; margin-top: 0.5rem; color: rgba(255,255,255,0.9); }
.task-meta--priority { color: var(--amber-light); } .task-meta--time { color: var(--text-light); }
.task-actions { display: flex; gap: 0.5rem; flex-shrink: 0; }
.timeline { position: relative; height: 1728px; background: #3a3a3a; border-radius: var(--radius-md); overflow: hidden; box-shadow: inset 0 2px 4px rgba(0,0,0,0.1); }
.timeline__hour-line { position: absolute; width: 100%; height: 1px; background: #5a5a5a; z-index: 1; }
.timeline__hour-label { position: absolute; top: -10px; left: 10px; font-size: 0.75rem; color: var(--text-dim); background: #3a3a3a; padding: 0 4px; }
.timeline__block {position: absolute; border-radius: var(--radius-sm); padding: 0 0.5rem; color: white; overflow: hidden; box-shadow: 0 2px 5px rgba(0,0,0,0.3); z-index: 2; display: flex; flex-direction: row !important; align-items: center; gap: 8px; box-sizing: border-box; }
.timeline__block--routine { background: var(--gray-badge); } .timeline__block--auto { background: rgba(217,119,6,0.95); border-left: 4px solid var(--amber-light); } .timeline__block--event { background: var(--task-color, var(--blue)); }
.timeline__block-time { font-size: 0.7rem; font-weight: bold; color: white; text-shadow: 0 1px 2px rgba(0,0,0,0.3); flex-shrink: 0; white-space: nowrap; }.month-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 0.5rem; flex: 1; }
.timeline__block-name { font-size: 0.85rem; font-weight: 500; color: white; text-shadow: 0 1px 2px rgba(0,0,0,0.3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; flex: 1; }
.month-weekdays { display: grid; grid-template-columns: repeat(7, 1fr); gap: 0.5rem; margin-bottom: 0.5rem; }
.month-weekday-header { text-align: center; font-size: 0.8rem; font-weight: 600; color: var(--text-dim); padding: 0.25rem 0; }
.month-cell--empty { background: transparent; pointer-events: none; min-height: 5rem; border: none; visibility: hidden; }
.month-cell { background: var(--bg-lighter); border-radius: var(--radius-md); padding: 0.5rem; cursor: pointer; display: flex; flex-direction: column; transition: background 0.2s; min-height: 5rem; }
.month-cell:hover { background: #7a7a7a; }
.month-cell__day { width: 1.75rem; height: 1.75rem; border-radius: 50%; background: #e5e7eb; color: #1f2937; display: flex; align-items: center; justify-content: center; font-size: 0.85rem; font-weight: bold; margin-bottom: 0.5rem; }
.month-chip { background: var(--task-color, var(--blue)); font-size: 0.65rem; padding: 0.2rem 0.4rem; border-radius: 0.25rem; color: white; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; display: flex; gap: 0.25rem; align-items: center; margin-bottom: 0.25rem; }
.month-chip--routine { background: var(--gray-badge); } .month-chip--auto { background: #d97706; } .month-chip--event { background: var(--blue); }
.month-chip__time { opacity: 0.8; font-weight: bold; font-size: 0.6rem; } .month-more { font-size: 0.65rem; color: #d1d5db; text-align: center; font-weight: bold; margin-top: auto; }
.day-nav { display: flex; align-items: center; gap: 1rem; margin-bottom: 1.5rem; } .day-nav__title { color: white; font-size: 1.5rem; margin: 0; }
.month-nav { display: flex; align-items: center; margin-bottom: 1rem; }
.panel { background: var(--bg-lighter); border-radius: var(--radius-md); padding: 1.5rem; flex: 1; }
.panel__header { color: var(--text-muted); font-size: 1rem; margin-bottom: 1rem; border-bottom: 1px solid var(--gray-badge); padding-bottom: 0.5rem; }
.empty-state { color: var(--text-dim); text-align: center; margin-top: 2rem; }
.settings-card { background: var(--bg-dark); border-radius: var(--radius-lg); padding: 2.5rem; width: 600px; }
.settings-info-row { background: var(--bg-light); border-radius: var(--radius-md); padding: 1rem; margin-bottom: 1.5rem; }
.settings-info-label { color: var(--text-muted); font-size: 0.875rem; margin-bottom: 0.25rem; } .settings-info-value { color: white; font-size: 1.125rem; }
.settings-reveal-row { background: var(--bg-light); border-radius: var(--radius-md); padding: 0.75rem 1rem; margin-bottom: 0.75rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.settings-reveal-value { display: flex; align-items: center; gap: 0.75rem; }
.settings-hidden-val { color: white; font-size: 1rem; font-family: monospace; letter-spacing: 0.05em; }
.btn-reveal { background: var(--bg-mid); border: none; color: rgba(255,255,255,0.7); font-size: 0.8rem; padding: 0.3rem 0.75rem; border-radius: 4px; cursor: pointer; transition: background 0.15s; white-space: nowrap; }
.btn-reveal:hover { background: var(--bg-lighter); color: white; }
.back-btn { position: absolute; top: 2rem; left: 2rem; display: flex; align-items: center; gap: 0.5rem; background: var(--bg-mid); color: white; border: none; padding: 0.75rem 1.25rem; border-radius: var(--radius-md); cursor: pointer; font-size: 1rem; font-weight: 500; }
.login-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--bg-darkest); }
.login-card { background: #d9d9d9; border-radius: var(--radius-lg); padding: 3rem; width: 500px; display: flex; flex-direction: column; align-items: center; }
.login-title { font-size: 4rem; font-weight: 700; line-height: 1.1; margin: 0 0 2rem 0; text-align: center; color: #1a1a1a; }
.login-fields { width: 100%; max-width: 320px; margin-bottom: 2rem; }
.login-input { width: 100%; padding: 0.75rem 1rem; border: 1px solid #5a5a5a; border-radius: var(--radius-md); background: #4a4a4a; color: white; margin-bottom: 1rem; outline: none; font-size: 1rem; }
.login-error { color: var(--red); font-size: 0.875rem; text-align: center; margin-bottom: 0.5rem; }
.controls-row { display: flex; gap: 1rem; margin-bottom: 1.5rem; flex-wrap: wrap; }

.repeat-section { margin-bottom: 0.5rem; }
.weekday-picker { display: flex; gap: 0.4rem; flex-wrap: wrap; margin-bottom: 0.4rem; }
.weekday-chip { display: inline-flex; flex-direction: column; align-items: center; cursor: pointer; }
.weekday-chip input[type="checkbox"] { display: none; }
.weekday-chip span {
  width: 2.2rem; height: 2.2rem;
  border-radius: 50%;
  background: var(--bg-mid);
  color: rgba(255,255,255,0.6);
  font-size: 0.75rem; font-weight: 600;
  display: flex; align-items: center; justify-content: center;
  border: 2px solid transparent;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  user-select: none;
}
.weekday-chip input:checked + span {
  background: var(--blue);
  color: #fff;
  border-color: #93c5fd;
}
.repeat-hint { font-size: 0.75rem; color: var(--text-dim); margin-top: 0.25rem; }


.burger-btn {
  display: none;
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 300;
  background: var(--bg-dark);
  border: none;
  border-radius: var(--radius-sm);
  padding: 0.5rem;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
  width: 2.5rem;
  height: 2.5rem;
  align-items: center;
  justify-content: center;
}
.burger-btn span {
  display: block;
  width: 20px;
  height: 2px;
  background: white;
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
  transform-origin: center;
}
.burger-btn--open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger-btn--open span:nth-child(2) { opacity: 0; }
.burger-btn--open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 199;
  opacity: 0; 
  visibility: hidden;
  pointer-events: none;
  backdrop-filter: blur(3px);
  transition: opacity 0.3s ease, visibility 0.3s ease;
}
.sidebar-overlay--visible {
  display: block;
  opacity: 1; 
  visibility: visible;
  pointer-events: auto; 
}
@media (max-width: 640px) {


  .sidebar__title { 
    padding-top: 3.5rem !important;
    text-align: left !important;
  }
  
  .burger-btn { display: flex; }

  .sidebar-overlay { display: block; }

  .sidebar {
    position: fixed;
    top: 0; 
    left: 0;
    height: 100vh;
    z-index: 200;
    transform: translateX(-100%);
    pointer-events: none; 
    transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 4px 0 24px rgba(0,0,0,0.4);
  }
  .sidebar--open { 
    transform: translateX(0); 
    pointer-events: auto;
  }

  .sidebar--open * {
    visibility: visible !important;
  }
  .app-layout { flex-direction: column; }

  .main-content {
    position: relative;
    z-index: 1;
    padding: 3.5rem 0.75rem 1.5rem;
    width: 100%;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
  }


  .day-nav {
    gap: 0.4rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
  }
  .day-nav__title {
    font-size: 1rem;
    flex: 1;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .controls-row {
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1rem;
  }
  .controls-row .btn {
    width: 100%;
    font-size: 0.9rem;
    padding: 0.65rem 1rem;
  }

  .form-card { padding: 1rem; }
  .form-row {
    flex-direction: column;
    gap: 0.5rem;
  }
  .tab-group { flex-wrap: wrap; }

  .task-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
    padding: 0.75rem;
  }
  .task-actions { width: 100%; }
  .task-actions .btn { width: 100%; }
  .task-name { font-size: 0.95rem; }
  .task-meta { font-size: 0.78rem; }

  .timeline__block-time { font-size: 0.6rem; }
  .timeline__block-name { font-size: 0.72rem; }
  .timeline__hour-label { font-size: 0.62rem; }

  .month-nav { gap: 0.25rem; flex-wrap: wrap; }
  .month-nav .day-nav__title { font-size: 0.95rem; }
  .month-grid, .month-weekdays { gap: 0.15rem; }
  .month-cell {
    min-height: 3rem;
    padding: 0.25rem;
    border-radius: 0.35rem;
  }
  .month-cell__day {
    width: 1.3rem; height: 1.3rem;
    font-size: 0.65rem;
    margin-bottom: 0.2rem;
  }
  .month-chip {
    font-size: 0.5rem;
    padding: 0.1rem 0.2rem;
    border-radius: 0.2rem;
  }
  .month-weekday-header { font-size: 0.6rem; }

  .settings-card {
    width: 100%;
    max-width: 100%;
    padding: 1rem;
    border-radius: var(--radius-md);
  }
  .main-content[style*="align-items:center"] {
    display: flex !important;
    align-items: stretch !important;
    justify-content: flex-start !important;
  }
  .settings-reveal-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
  }
  .settings-reveal-value { flex-wrap: wrap; }

  .login-card {
    width: 92%;
    padding: 2rem 1.25rem;
    border-radius: var(--radius-md);
  }
  .login-title { font-size: 2.75rem; }
  .login-fields { max-width: 100%; }

  .weekday-picker { gap: 0.3rem; }
  .weekday-chip span {
    width: 1.9rem; height: 1.9rem;
    font-size: 0.68rem;
  }
}

.settings-main {
  align-items: center;
  justify-content: center;
}
@media (max-width: 640px) {
  .settings-main {
    align-items: stretch;
    justify-content: flex-start;
    padding-top: 3.5rem;
  }
}

.mode-toggle-row {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}
.mode-btn {
  border: none;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  background: var(--bg-light);
  color: rgba(255,255,255,0.5);
  transition: background 0.15s, color 0.15s;
}
.mode-btn--active {
  background: var(--blue);
  color: #fff;
}
.mode-btn:hover:not(.mode-btn--active) {
  background: var(--bg-lighter);
  color: rgba(255,255,255,0.85);
}

.edit-top-row {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}
.edit-top-row .btn { flex-shrink: 0; }

.task-list { display: flex; flex-direction: column; gap: 0.6rem; }
.task-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
  gap: 0.75rem;
}
.task-item__info { flex: 1; min-width: 0; }

@media (max-width: 640px) {
  .mode-toggle-row { width: 100%; }
  .mode-btn { flex: 1; text-align: center; }
  .edit-top-row { flex-direction: column; }
  .edit-top-row .btn { width: 100%; }
  .task-item { flex-direction: column; align-items: flex-start; }
  .task-item button { width: 100%; text-align: center; }
}