/* assets/css/main.css */

:root {
  --primary:           #0059bb;
  --primary-container: #0070ea;
  --primary-fixed:     #d8e2ff;
  --primary-fixed-dim: #adc7ff;
  --on-primary:        #ffffff;
  --on-primary-fixed:  #001a41;
  --on-primary-fixed-variant: #004493;
  --inverse-primary:   #adc7ff;

  --secondary:           #006d30;
  --secondary-container: #67ff8f;
  --secondary-fixed:     #67ff8f;
  --secondary-fixed-dim: #46e176;
  --on-secondary:        #ffffff;
  --on-secondary-fixed:  #00210a;
  --on-secondary-fixed-variant: #005322;
  --on-secondary-container: #007433;

  --tertiary:           #5644d0;
  --tertiary-container: #6f5fea;
  --tertiary-fixed:     #e4dfff;
  --tertiary-fixed-dim: #c6bfff;
  --on-tertiary:        #ffffff;
  --on-tertiary-fixed:  #160066;
  --on-tertiary-fixed-variant: #4029ba;
  --on-tertiary-container:    #fffbff;

  --error:           #ba1a1a;
  --error-container: #ffdad6;
  --on-error:        #ffffff;
  --on-error-container: #93000a;

  --background:      #faf8ff;
  --surface:         #faf8ff;
  --surface-bright:  #faf8ff;
  --surface-dim:     #ced9ff;
  --surface-variant: #dae2ff;
  --surface-tint:    #005bc0;

  --surface-container-lowest:  #ffffff;
  --surface-container-low:     #f2f3ff;
  --surface-container:         #eaedff;
  --surface-container-high:    #e2e7ff;
  --surface-container-highest: #dae2ff;

  --on-surface:         #0c1a3a;
  --on-surface-variant: #414754;
  --on-background:      #0c1a3a;
  --inverse-surface:    #232f50;
  --inverse-on-surface: #eef0ff;

  --outline:         #717786;
  --outline-variant: #c1c6d7;

  --sidebar-w: 256px;
  --topbar-h:  60px;
  --radius:    0.75rem;
  --shadow-card: 0 12px 32px rgba(12,26,58,.06);
  --transition: 0.18s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; -webkit-font-smoothing: antialiased; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--background);
  color: var(--on-surface);
  line-height: 1.5;
}

/* ── Scrollbar ─────────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--outline-variant); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--outline); }

/* ── Typography ────────────────────────────────────────────── */
h1,h2,h3,h4,h5,h6 { line-height: 1.2; }
a { text-decoration: none; color: inherit; }
input, select, textarea, button { font-family: inherit; outline: none; }

/* ── Layout Shell ──────────────────────────────────────────── */
.app-layout { display: flex; min-height: 100vh; }

/* ── Sidebar ───────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  position: fixed;
  top: 0; left: 0;
  height: 100vh;
  background: #f2f3ff;
  display: flex;
  flex-direction: column;
  padding: 1.5rem 0;
  z-index: 40;
  border-right: 1px solid var(--outline-variant);
  transition: transform var(--transition);
}

.sidebar-logo {
  padding: 0 1.5rem;
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: .75rem;
}

.sidebar-logo-icon {
  width: 36px; height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary-container));
  display: flex; align-items: center; justify-content: center;
  color: white;
  flex-shrink: 0;
}

.sidebar-logo-text h1 {
  font-size: 1.1rem;
  font-weight: 900;
  letter-spacing: -.04em;
  color: #1d4ed8;
  line-height: 1;
}
.sidebar-logo-text p {
  font-size: .625rem;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--on-surface-variant);
  margin-top: 2px;
}

.sidebar-nav { flex: 1; }

.nav-item {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .75rem 1rem;
  margin: 0 .5rem;
  border-radius: var(--radius);
  font-size: .875rem;
  font-weight: 500;
  color: #64748b;
  cursor: pointer;
  transition: all var(--transition);
  border-left: 3px solid transparent;
  text-decoration: none;
}
.nav-item:hover { color: var(--primary); background: rgba(0,89,187,.05); }
.nav-item.active {
  color: var(--primary);
  background: rgba(0,89,187,.08);
  border-left-color: var(--primary);
  border-radius: 0 var(--radius) var(--radius) 0;
  margin-left: 0;
  padding-left: 1.25rem;
}

.sidebar-add-btn {
  margin: 1rem .75rem;
  padding: .75rem 1rem;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: .875rem;
  display: flex; align-items: center; justify-content: center; gap: .5rem;
  cursor: pointer;
  transition: opacity var(--transition);
  box-shadow: 0 4px 14px rgba(0,89,187,.25);
}
.sidebar-add-btn:hover { opacity: .9; }

.sidebar-footer {
  padding-top: 1rem;
  border-top: 1px solid var(--outline-variant);
}

/* ── Topbar ────────────────────────────────────────────────── */
.topbar {
  position: sticky; top: 0; z-index: 50;
  height: var(--topbar-h);
  background: rgba(250,248,255,.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--outline-variant);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 2rem;
  gap: 1rem;
}

.topbar-search {
  position: relative;
  max-width: 380px;
  flex: 1;
}
.topbar-search .search-icon {
  position: absolute;
  left: .75rem;
  top: 50%; transform: translateY(-50%);
  color: var(--outline);
  font-size: 1.1rem;
  pointer-events: none;
}
.topbar-search input {
  width: 100%;
  padding: .5rem .75rem .5rem 2.25rem;
  background: var(--surface-container-highest);
  border: none;
  border-radius: 9999px;
  font-size: .875rem;
  color: var(--on-surface);
  transition: all var(--transition);
}
.topbar-search input::placeholder { color: var(--outline); }
.topbar-search input:focus {
  background: white;
  box-shadow: 0 0 0 2px rgba(0,89,187,.2);
}

.topbar-actions { display: flex; align-items: center; gap: 1rem; }

.icon-btn {
  width: 36px; height: 36px;
  border-radius: 9999px;
  display: flex; align-items: center; justify-content: center;
  background: transparent; border: none;
  color: #64748b; cursor: pointer;
  transition: background var(--transition);
}
.icon-btn:hover { background: #f1f5f9; }

.avatar-btn {
  display: flex; align-items: center; gap: .6rem;
  cursor: pointer; padding: .25rem .5rem;
  border-radius: var(--radius);
  transition: background var(--transition);
}
.avatar-btn:hover { background: var(--surface-container-low); }
.avatar-btn img {
  width: 36px; height: 36px;
  border-radius: 9999px;
  border: 2px solid white;
  box-shadow: 0 1px 4px rgba(0,0,0,.12);
  object-fit: cover;
}
.avatar-btn .user-info { text-align: right; }
.avatar-btn .user-name { font-size: .8rem; font-weight: 700; line-height: 1.2; }
.avatar-btn .user-role { font-size: .65rem; color: var(--on-surface-variant); }

/* ── Main Content ──────────────────────────────────────────── */
.main-content {
  margin-left: var(--sidebar-w);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.page-body { flex: 1; padding: 2.5rem; }

/* ── Cards ─────────────────────────────────────────────────── */
.card {
  background: var(--surface-container-lowest);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.card-header {
  padding: 1.5rem;
  border-bottom: 1px solid rgba(193,198,215,.2);
  display: flex; align-items: center; justify-content: space-between;
  background: var(--surface-bright);
}

.card-body { padding: 1.5rem; }

/* ── Task Cards ────────────────────────────────────────────── */
.task-card {
  background: white;
  border-radius: var(--radius);
  padding: 1.1rem;
  position: relative;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(12,26,58,.04);
  border: 1px solid transparent;
  transition: all var(--transition);
}
.task-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(12,26,58,.1);
  border-color: rgba(0,89,187,.15);
}
.task-card .accent-bar {
  position: absolute;
  left: 0; top: 1rem; bottom: 1rem;
  width: 3px; border-radius: 0 4px 4px 0;
}

/* ── Badges ────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: .2rem .6rem;
  border-radius: .25rem;
  font-size: .65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
}
.badge-primary   { background: var(--primary-fixed);   color: var(--on-primary-fixed-variant); }
.badge-secondary { background: var(--secondary-fixed); color: var(--on-secondary-fixed-variant); }
.badge-tertiary  { background: var(--tertiary-fixed);  color: var(--on-tertiary-fixed-variant); }
.badge-error     { background: var(--error-container); color: var(--on-error-container); }
.badge-neutral   { background: var(--surface-container-highest); color: var(--on-surface-variant); }

/* Priority badges */
.priority-urgent { background: #ffdad6; color: #93000a; }
.priority-high   { background: #e4dfff; color: #4029ba; }
.priority-medium { background: #d8e2ff; color: #004493; }
.priority-low    { background: #f2f3ff; color: #64748b; }

/* ── Progress Bar ──────────────────────────────────────────── */
.progress {
  height: 4px;
  background: var(--surface-container-high);
  border-radius: 9999px;
  overflow: hidden;
}
.progress-bar {
  height: 100%;
  border-radius: 9999px;
  background: var(--secondary);
  transition: width .4s ease;
}

/* ── Buttons ───────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
  padding: .6rem 1.2rem;
  border-radius: var(--radius);
  font-size: .875rem; font-weight: 600;
  border: none; cursor: pointer;
  transition: all var(--transition);
}
.btn-primary   { background: var(--primary); color: white; box-shadow: 0 4px 12px rgba(0,89,187,.22); }
.btn-primary:hover { opacity: .9; }
.btn-secondary { background: var(--surface-container-highest); color: var(--on-surface-variant); }
.btn-secondary:hover { background: var(--surface-container-high); }
.btn-ghost     { background: transparent; color: var(--primary); }
.btn-ghost:hover { background: var(--primary-fixed); }
.btn-danger    { background: var(--error-container); color: var(--on-error-container); }
.btn-danger:hover { background: var(--error); color: white; }

/* ── Form Inputs ───────────────────────────────────────────── */
.form-group { display: flex; flex-direction: column; gap: .4rem; }

.form-label {
  font-size: .7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--on-surface-variant);
}

.form-input {
  padding: .75rem 1rem;
  background: var(--surface-container-low);
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: .9rem;
  color: var(--on-surface);
  transition: all var(--transition);
}
.form-input:focus {
  background: white;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0,89,187,.12);
}
.form-input::placeholder { color: var(--outline); }

select.form-input { cursor: pointer; }

/* ── Stat Cards ────────────────────────────────────────────── */
.stat-card {
  background: var(--surface-container-lowest);
  border-radius: var(--radius);
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.stat-card .accent { position: absolute; top: 0; left: 0; width: 4px; height: 100%; border-radius: 0 4px 4px 0; }

/* ── Table ─────────────────────────────────────────────────── */
.data-table { width: 100%; border-collapse: collapse; }
.data-table th {
  padding: .9rem 1.2rem;
  font-size: .65rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .08em;
  color: var(--on-surface-variant);
  background: rgba(226,231,255,.4);
  text-align: left;
}
.data-table td {
  padding: .9rem 1.2rem;
  font-size: .875rem;
  border-top: 1px solid rgba(193,198,215,.15);
}
.data-table tr:hover td { background: var(--surface-container-low); }

/* ── Modal ─────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(12,26,58,.45);
  backdrop-filter: blur(4px);
  z-index: 200;
  display: flex; align-items: center; justify-content: center;
  padding: 1rem;
  opacity: 0; pointer-events: none;
  transition: opacity var(--transition);
}
.modal-overlay.open { opacity: 1; pointer-events: all; }

.modal {
  background: var(--surface-container-lowest);
  border-radius: 1rem;
  width: 100%; max-width: 540px;
  max-height: 90vh; overflow-y: auto;
  transform: translateY(20px);
  transition: transform var(--transition);
  box-shadow: 0 32px 64px rgba(12,26,58,.2);
}
.modal-overlay.open .modal { transform: translateY(0); }

.modal-header {
  padding: 1.5rem;
  border-bottom: 1px solid rgba(193,198,215,.2);
  display: flex; align-items: center; justify-content: space-between;
}
.modal-body   { padding: 1.5rem; }
.modal-footer { padding: 1.5rem; border-top: 1px solid rgba(193,198,215,.2); display: flex; justify-content: flex-end; gap: .75rem; }

/* ── Toast ─────────────────────────────────────────────────── */
#toast-container {
  position: fixed; bottom: 1.5rem; right: 1.5rem;
  z-index: 9999;
  display: flex; flex-direction: column; gap: .5rem;
}
.toast {
  padding: .85rem 1.2rem;
  border-radius: var(--radius);
  font-size: .875rem; font-weight: 500;
  min-width: 260px;
  display: flex; align-items: center; gap: .75rem;
  box-shadow: 0 8px 24px rgba(12,26,58,.15);
  animation: slideIn .22s ease;
}
@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to   { transform: translateX(0); opacity: 1; }
}
.toast.success { background: var(--secondary-fixed); color: var(--on-secondary-fixed-variant); }
.toast.error   { background: var(--error-container); color: var(--on-error-container); }
.toast.info    { background: var(--primary-fixed);   color: var(--on-primary-fixed-variant); }

/* ── FAB ───────────────────────────────────────────────────── */
.fab {
  position: fixed; bottom: 2rem; right: 2rem;
  width: 56px; height: 56px;
  border-radius: 9999px;
  background: var(--primary);
  color: white;
  border: none; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 24px rgba(0,89,187,.35);
  z-index: 100;
  transition: all var(--transition);
}
.fab:hover { transform: scale(1.07); }
.fab:active { transform: scale(.95); }

/* ── Kanban Column ─────────────────────────────────────────── */
.kanban-col-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 .25rem;
  margin-bottom: 1rem;
}
.kanban-col-label {
  display: flex; align-items: center; gap: .5rem;
  font-size: .65rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .12em;
}
.col-dot { width: 10px; height: 10px; border-radius: 9999px; }

/* ── Calendar ──────────────────────────────────────────────── */
.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
}
.cal-cell {
  min-height: 110px;
  padding: .5rem;
  border-right: 1px solid rgba(193,198,215,.25);
  border-bottom: 1px solid rgba(193,198,215,.25);
  transition: background var(--transition);
  cursor: pointer;
}
.cal-cell:hover { background: var(--surface-container); }
.cal-cell.today {
  background: rgba(0,89,187,.04);
  box-shadow: inset 0 0 0 1px rgba(0,89,187,.2);
}
.cal-day-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; border-radius: 9999px;
  font-size: .75rem; font-weight: 500;
}
.cal-day-num.today-num {
  background: var(--primary); color: white; font-weight: 700;
}
.cal-event {
  font-size: .65rem;
  padding: .2rem .4rem;
  border-radius: .25rem;
  margin-top: .25rem;
  border-left: 3px solid;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  cursor: pointer;
}

/* ── Toggle Switch ─────────────────────────────────────────── */
.toggle {
  position: relative;
  width: 44px; height: 24px;
  flex-shrink: 0;
}
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
  position: absolute; inset: 0;
  background: var(--surface-container-highest);
  border-radius: 9999px;
  cursor: pointer;
  transition: background .2s;
}
.toggle-slider::after {
  content: '';
  position: absolute;
  top: 3px; left: 3px;
  width: 18px; height: 18px;
  border-radius: 9999px;
  background: white;
  box-shadow: 0 1px 3px rgba(0,0,0,.2);
  transition: transform .2s;
}
.toggle input:checked + .toggle-slider { background: var(--primary); }
.toggle input:checked + .toggle-slider::after { transform: translateX(20px); }

/* ── Pagination ────────────────────────────────────────────── */
.pagination {
  display: flex; align-items: center; gap: .25rem;
}
.page-btn {
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius);
  border: none; background: transparent;
  font-size: .8rem; font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  color: var(--on-surface);
}
.page-btn:hover { background: var(--surface-container-low); }
.page-btn.active { background: var(--primary); color: white; }
.page-btn:disabled { opacity: .3; cursor: not-allowed; }

/* ── Loading Spinner ───────────────────────────────────────── */
.spinner {
  width: 40px; height: 40px;
  border: 3px solid var(--primary-fixed);
  border-top-color: var(--primary);
  border-radius: 9999px;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.loading-state {
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 3rem;
  gap: 1rem;
  color: var(--on-surface-variant);
  font-size: .875rem;
}

/* ── Empty State ───────────────────────────────────────────── */
.empty-state {
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 3rem 1rem;
  text-align: center;
  gap: .75rem;
}
.empty-state .icon { font-size: 3rem; color: var(--outline-variant); }
.empty-state h4 { font-size: 1rem; font-weight: 700; }
.empty-state p  { font-size: .875rem; color: var(--on-surface-variant); max-width: 280px; }

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0; }
  .page-body { padding: 1rem; }
  .topbar { padding: 0 1rem; }
}

/* ── Auth Page ─────────────────────────────────────────────── */
.auth-body {
  min-height: 100vh;
  background: linear-gradient(135deg, #faf8ff 0%, #eaedff 100%);
  display: flex; align-items: center; justify-content: center;
  padding: 1.5rem;
}
.auth-card {
  width: 100%; max-width: 980px;
  border-radius: 2rem;
  overflow: hidden;
  box-shadow: 0 32px 80px rgba(12,26,58,.12);
  display: grid;
  grid-template-columns: 1fr;
}
@media (min-width: 768px) {
  .auth-card { grid-template-columns: 7fr 5fr; }
}
.auth-left {
  background: var(--surface-container-low);
  padding: 4rem;
  display: flex; flex-direction: column; justify-content: space-between;
  position: relative; overflow: hidden;
}
.auth-right {
  background: var(--surface-container-lowest);
  padding: 3rem;
  display: flex; flex-direction: column; justify-content: center;
}