/* ============================================================
   Koundinya Task Dashboard – style.css
   Dark-mode-first, glassmorphism, minimal, Apple-like feel
   ============================================================ */

/* ── CSS Custom Properties (design tokens) ── */
:root {
  /* Base palette – dark mode */
  --bg:            #0d0d0f;
  --surface:       rgba(255, 255, 255, 0.05);
  --surface-hover: rgba(255, 255, 255, 0.08);
  --border:        rgba(255, 255, 255, 0.10);
  --text:          #e8e8f0;
  --text-muted:    rgba(232, 232, 240, 0.50);
  --radius:        16px;
  --radius-sm:     10px;
  --shadow:        0 8px 32px rgba(0, 0, 0, 0.45);
  --transition:    0.22s cubic-bezier(0.4, 0, 0.2, 1);

  /* Quadrant accent colours */
  --delegate-from: #f59e0b;   /* amber */
  --delegate-to:   #d97706;
  --donow-from:    #ef4444;   /* red */
  --donow-to:      #f97316;
  --delete-from:   #6b7280;   /* neutral */
  --delete-to:     #374151;
  --schedule-from: #6366f1;   /* indigo/purple */
  --schedule-to:   #3b82f6;
}

/* ── Light mode overrides ── */
[data-theme="light"] {
  --bg:            #f0f2f8;
  --surface:       rgba(255, 255, 255, 0.75);
  --surface-hover: rgba(255, 255, 255, 0.92);
  --border:        rgba(0, 0, 0, 0.08);
  --text:          #111118;
  --text-muted:    rgba(17, 17, 24, 0.50);
  --shadow:        0 8px 32px rgba(0, 0, 0, 0.12);
}

/* ── Reset / Box model ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
  transition: background var(--transition), color var(--transition);
  /* subtle animated radial background glow */
  background-image:
    radial-gradient(ellipse 80% 60% at 20% -10%, rgba(99, 102, 241, 0.18) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 80% 110%, rgba(239, 68, 68, 0.12) 0%, transparent 60%);
  background-attachment: fixed;
}

/* ============================================================
   HEADER
   ============================================================ */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  background: rgba(13, 13, 15, 0.75);
  border-bottom: 1px solid var(--border);
  padding: 0 clamp(16px, 4vw, 48px);
}

[data-theme="light"] .header {
  background: rgba(240, 242, 248, 0.82);
}

.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 20px;
}

/* Brand */
.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-icon { font-size: 1.4rem; }
.brand-title {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.3px;
  background: linear-gradient(135deg, #e8e8f0 0%, #9ca3af 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Quote */
.quote-box {
  flex: 1;
  text-align: center;
}
.quote-text {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-style: italic;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Theme toggle */
.theme-toggle {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  font-size: 1rem;
  cursor: pointer;
  transition: transform var(--transition), background var(--transition);
  flex-shrink: 0;
}
.theme-toggle:hover { transform: rotate(20deg) scale(1.1); }

/* ============================================================
   MATRIX GRID
   ============================================================ */
.matrix-grid {
  max-width: 1400px;
  margin: 28px auto;
  padding: 0 clamp(12px, 3vw, 40px) 60px;
  display: grid;
  /* 2 columns, equal width */
  grid-template-columns: 1fr 1fr;
  /* 2 rows, min height but grow */
  grid-template-rows: auto auto;
  gap: 20px;
}

/* ============================================================
   RESPONSIVE — Tablet (≤ 900px)
   ============================================================ */
@media (max-width: 900px) {
  .quote-box { display: none; } /* hide quote on smaller screens to save space */
}

/* ============================================================
   RESPONSIVE — Mobile (≤ 720px)
   ============================================================ */
@media (max-width: 720px) {

  /* Stack grid to single column */
  .matrix-grid {
    grid-template-columns: 1fr;
    margin: 16px auto;
    padding: 0 12px 40px;
    gap: 14px;
  }

  /* Shrink header height */
  .header-inner {
    height: 52px;
    gap: 12px;
  }

  .brand-title { font-size: 1rem; }
  .brand-icon  { font-size: 1.1rem; }

  /* Theme toggle easier to tap */
  .theme-toggle {
    width: 40px;
    height: 40px;
    font-size: 1.1rem;
  }

  /* Quadrant padding tighter */
  .quadrant {
    padding: 16px 14px;
    min-height: 200px;
  }

  .quadrant-title { font-size: 1rem; }

  /* Tags wrap gracefully */
  .quadrant-labels { gap: 4px; }
  .tag { font-size: 0.58rem; padding: 2px 6px; }

  /* Task cards — bigger tap area */
  .task-card { padding: 14px 16px; }
  .task-title { font-size: 0.92rem; }
  .task-notes { font-size: 0.80rem; }

  /* Delete button always visible on mobile (no hover) */
  .task-card .delete-btn {
    opacity: 1;
    top: 10px;
    right: 10px;
    font-size: 0.9rem;
    padding: 4px 6px;
  }

  /* Add task button bigger hit area */
  .btn-add { padding: 12px 0; font-size: 0.88rem; }

  /* Modal full-width on mobile */
  .modal {
    padding: 24px 18px 20px;
    border-radius: 16px;
    max-width: 100%;
  }

  .modal-title { font-size: 1rem; }

  .form-input,
  .form-textarea {
    font-size: 1rem; /* prevents iOS zoom on focus */
    padding: 12px;
  }

  .btn-save {
    padding: 14px;
    font-size: 1rem;
  }
}

/* ============================================================
   QUADRANT CARD (glassmorphism)
   ============================================================ */
.quadrant {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  display: flex;
  flex-direction: column;
  min-height: 280px;
  transition: box-shadow var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}

/* ── Per-quadrant VIVID coloured backgrounds ── */
.q-delegate {
  background: linear-gradient(160deg, #78450a 0%, #5a3208 60%, #3d2005 100%);
  border: 2px solid rgba(245,158,11,0.70);
  box-shadow: 0 8px 40px rgba(245,158,11,0.30), var(--shadow);
}
.q-donow {
  background: linear-gradient(160deg, #7a1010 0%, #5c0c0c 60%, #3d0808 100%);
  border: 2px solid rgba(239,68,68,0.70);
  box-shadow: 0 8px 40px rgba(239,68,68,0.30), var(--shadow);
}
.q-delete {
  background: linear-gradient(160deg, #2e3340 0%, #222730 60%, #171a20 100%);
  border: 2px solid rgba(107,114,128,0.55);
  box-shadow: 0 8px 40px rgba(0,0,0,0.45), var(--shadow);
}
.q-schedule {
  background: linear-gradient(160deg, #251a6e 0%, #1b1252 60%, #120c38 100%);
  border: 2px solid rgba(99,102,241,0.70);
  box-shadow: 0 8px 40px rgba(99,102,241,0.30), var(--shadow);
}

/* Remove the ::before pseudo element — no longer needed */
.quadrant::before { display: none; }

/* Coloured top border stripe — thicker and brighter */
.quadrant::after {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 5px;
  border-radius: var(--radius) var(--radius) 0 0;
}
.q-delegate::after { background: linear-gradient(90deg, #f59e0b, #fcd34d); }
.q-donow::after    { background: linear-gradient(90deg, #ef4444, #fb923c); }
.q-delete::after   { background: linear-gradient(90deg, #6b7280, #d1d5db); }
.q-schedule::after { background: linear-gradient(90deg, #6366f1, #60a5fa); }

/* Coloured quadrant titles — bright and bold */
.q-delegate .quadrant-title { color: #fcd34d; text-shadow: 0 0 24px rgba(245,158,11,0.70); font-size: 1.2rem; }
.q-donow    .quadrant-title { color: #fca5a5; text-shadow: 0 0 24px rgba(239,68,68,0.70);  font-size: 1.2rem; }
.q-delete   .quadrant-title { color: #e5e7eb; text-shadow: 0 0 12px rgba(156,163,175,0.40); font-size: 1.2rem; }
.q-schedule .quadrant-title { color: #c7d2fe; text-shadow: 0 0 24px rgba(99,102,241,0.70); font-size: 1.2rem; }

/* Drag-over highlight — brighten the whole box */
.quadrant.drag-over {
  filter: brightness(1.30);
  box-shadow: 0 0 0 3px rgba(255,255,255,0.40), 0 12px 48px rgba(255,255,255,0.12);
}

/* ── Quadrant header ── */
.quadrant-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 16px;
  gap: 8px;
}

.quadrant-labels {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  flex: 1;
}

/* Pills */
.tag {
  font-size: 0.60rem;
  font-weight: 700;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 100px;
}
.tag-primary  { background: rgba(255,255,255,0.18); color: var(--text); }
.tag-secondary{ background: rgba(255,255,255,0.08); color: var(--text-muted); }

.quadrant-title {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.2px;
  flex-shrink: 0;
}

/* Task counter badge */
.task-count {
  font-size: 0.72rem;
  font-weight: 700;
  min-width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 100px;
  background: rgba(255,255,255,0.12);
  padding: 0 6px;
  flex-shrink: 0;
}

/* Colour the counter per quadrant */
.q-delegate .task-count { background: rgba(245, 158, 11, 0.25); color: var(--delegate-from); }
.q-donow    .task-count { background: rgba(239, 68,  68, 0.25); color: var(--donow-from);    }
.q-delete   .task-count { background: rgba(107, 114, 128,0.25); color: #9ca3af;               }
.q-schedule .task-count { background: rgba(99, 102, 241, 0.25); color: var(--schedule-from); }

/* ============================================================
   TASK LIST + TASK CARDS
   ============================================================ */
.task-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;  /* fill quadrant height */
}

/* Individual task card */
.task-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  cursor: grab;
  transition: transform var(--transition), box-shadow var(--transition),
              background var(--transition), opacity var(--transition);
  position: relative;
  animation: taskIn 0.28s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

/* Per-quadrant task card — vivid coloured cards */
.q-delegate .task-card {
  background: rgba(245,158,11,0.30);
  border: 1px solid rgba(245,158,11,0.65);
  box-shadow: 0 2px 16px rgba(245,158,11,0.20);
}
.q-donow .task-card {
  background: rgba(239,68,68,0.30);
  border: 1px solid rgba(239,68,68,0.65);
  box-shadow: 0 2px 16px rgba(239,68,68,0.20);
}
.q-delete .task-card {
  background: rgba(107,114,128,0.28);
  border: 1px solid rgba(156,163,175,0.55);
  box-shadow: 0 2px 16px rgba(0,0,0,0.25);
}
.q-schedule .task-card {
  background: rgba(99,102,241,0.30);
  border: 1px solid rgba(99,102,241,0.65);
  box-shadow: 0 2px 16px rgba(99,102,241,0.20);
}

/* Task title text colour per quadrant for legibility */
.q-delegate .task-card .task-title { color: #fef3c7; }
.q-donow    .task-card .task-title { color: #fee2e2; }
.q-delete   .task-card .task-title { color: #f3f4f6; }
.q-schedule .task-card .task-title { color: #e0e7ff; }

/* Hover — strong glow lift */
.q-delegate .task-card:hover { background: rgba(245,158,11,0.50); border-color: rgba(245,158,11,0.90); box-shadow: 0 8px 28px rgba(245,158,11,0.45); transform: translateY(-3px); }
.q-donow    .task-card:hover { background: rgba(239,68,68,0.50);  border-color: rgba(239,68,68,0.90);  box-shadow: 0 8px 28px rgba(239,68,68,0.45);  transform: translateY(-3px); }
.q-delete   .task-card:hover { background: rgba(107,114,128,0.45);border-color: rgba(156,163,175,0.85);box-shadow: 0 8px 28px rgba(107,114,128,0.30);transform: translateY(-3px); }
.q-schedule .task-card:hover { background: rgba(99,102,241,0.50); border-color: rgba(99,102,241,0.90); box-shadow: 0 8px 28px rgba(99,102,241,0.45); transform: translateY(-3px); }

/* Entrance animation */
@keyframes taskIn {
  from { opacity: 0; transform: translateY(10px) scale(0.96); }
  to   { opacity: 1; transform: translateY(0)    scale(1);    }
}

.task-card:hover {
  background: rgba(255,255,255,0.10);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.30);
}
.task-card.dragging {
  opacity: 0.45;
  cursor: grabbing;
  transform: scale(0.97);
}

/* Delete button (visible on hover) */
.task-card .delete-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.85rem;
  cursor: pointer;
  opacity: 0;
  transition: opacity var(--transition), color var(--transition);
  line-height: 1;
  padding: 2px 4px;
  border-radius: 4px;
}
.task-card:hover .delete-btn { opacity: 1; }
.task-card .delete-btn:hover { color: #ef4444; background: rgba(239,68,68,0.12); }

.task-title {
  font-size: 0.88rem;
  font-weight: 600;
  padding-right: 20px; /* avoid overlap with delete btn */
  word-break: break-word;
}

.task-notes {
  font-size: 0.77rem;
  color: var(--text-muted);
  margin-top: 5px;
  word-break: break-word;
}

.task-time {
  font-size: 0.68rem;
  color: var(--text-muted);
  margin-top: 6px;
  opacity: 0.7;
}

/* ============================================================
   ADD TASK BUTTON
   ============================================================ */
.add-task-area {
  margin-top: 14px;
}

.btn-add {
  width: 100%;
  padding: 9px 0;
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  letter-spacing: 0.3px;
  transition: border-color var(--transition), color var(--transition),
              background var(--transition), transform var(--transition);
}
.btn-add:hover {
  border-color: rgba(255,255,255,0.30);
  color: var(--text);
  background: rgba(255,255,255,0.04);
  transform: translateY(-1px);
}

/* Per-quadrant coloured Add Task buttons */
.q-delegate .btn-add { border-color: rgba(245,158,11,0.45); color: #fbbf24; }
.q-donow    .btn-add { border-color: rgba(239,68,68,0.45);  color: #f87171; }
.q-delete   .btn-add { border-color: rgba(107,114,128,0.45);color: #9ca3af; }
.q-schedule .btn-add { border-color: rgba(99,102,241,0.45); color: #818cf8; }

.q-delegate .btn-add:hover { border-color: rgba(245,158,11,0.85); background: rgba(245,158,11,0.12); color: #fcd34d; transform: translateY(-1px); }
.q-donow    .btn-add:hover { border-color: rgba(239,68,68,0.85);  background: rgba(239,68,68,0.12);  color: #fca5a5; transform: translateY(-1px); }
.q-delete   .btn-add:hover { border-color: rgba(107,114,128,0.85);background: rgba(107,114,128,0.12);color: #d1d5db; transform: translateY(-1px); }
.q-schedule .btn-add:hover { border-color: rgba(99,102,241,0.85); background: rgba(99,102,241,0.12); color: #a5b4fc; transform: translateY(-1px); }

/* ============================================================
   MODAL
   ============================================================ */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0, 0, 0, 0.60);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}
.modal-backdrop.open {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: #1a1a22;
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 28px 28px 24px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 24px 64px rgba(0,0,0,0.60);
  position: relative;
  transform: translateY(16px) scale(0.97);
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

[data-theme="light"] .modal { background: #ffffff; }

.modal-backdrop.open .modal {
  transform: translateY(0) scale(1);
}

.modal-close {
  position: absolute;
  top: 14px; right: 16px;
  background: rgba(255,255,255,0.08);
  border: none;
  color: var(--text-muted);
  width: 28px; height: 28px;
  border-radius: 50%;
  font-size: 0.8rem;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}
.modal-close:hover { background: rgba(239,68,68,0.20); color: #ef4444; }

.modal-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}
.required { color: #ef4444; }
.optional  { font-weight: 400; text-transform: none; letter-spacing: 0; }

.form-input,
.form-textarea {
  width: 100%;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.9rem;
  font-family: inherit;
  padding: 10px 12px;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  margin-bottom: 16px;
  resize: vertical;
}

[data-theme="light"] .form-input,
[data-theme="light"] .form-textarea {
  background: rgba(0,0,0,0.04);
}

.form-input:focus,
.form-textarea:focus {
  border-color: rgba(99, 102, 241, 0.70);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.btn-save {
  width: 100%;
  padding: 11px;
  border: none;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, #6366f1 0%, #3b82f6 100%);
  color: #fff;
  font-size: 0.92rem;
  font-weight: 700;
  cursor: pointer;
  letter-spacing: 0.2px;
  transition: transform var(--transition), box-shadow var(--transition), opacity var(--transition);
  margin-top: 4px;
}
.btn-save:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.40);
}
.btn-save:active { transform: scale(0.98); }

/* ============================================================
   SCROLLBAR (WebKit)
   ============================================================ */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.12);
  border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.22); }

/* ============================================================
   SELECTION
   ============================================================ */
::selection { background: rgba(99, 102, 241, 0.35); }

/* ============================================================
   UTILITY – Empty state message
   ============================================================ */
.empty-msg {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-align: center;
  padding: 20px 0 10px;
  pointer-events: none;
  user-select: none;
}