/* ============================================================
   TrackTask — central design system
   Colours derived from the TrackTask logo.
   ============================================================ */

:root {
  --tt-primary: #2e9bf0;
  --tt-primary-dark: #1673c4;
  --tt-primary-light: #e8f4fe;
  --tt-accent: #e9268f;
  --tt-accent-light: #fdeaf5;
  --tt-violet: #5b4be0;
  --tt-orange: #f7941d;
  --tt-success: #12b76a;
  --tt-success-light: #e7f8f0;
  --tt-warning: #f7941d;
  --tt-warning-light: #fef3e3;
  --tt-danger: #e14f4f;
  --tt-danger-light: #fdecec;
  --tt-info: #2e9bf0;

  --tt-background: #f6f8fb;
  --tt-surface: #ffffff;
  --tt-surface-alt: #f9fafb;
  --tt-border: #e5e9f0;
  --tt-border-strong: #d3dae6;
  --tt-text: #101828;
  --tt-muted: #667085;

  --tt-sidebar: #101828;
  --tt-sidebar-hover: #1d2939;
  --tt-sidebar-text: #cdd5e0;

  --tt-gradient: linear-gradient(120deg, #e9268f 0%, #f7941d 35%, #12b76a 65%, #2e9bf0 100%);

  --tt-radius-sm: 6px;
  --tt-radius: 10px;
  --tt-radius-lg: 14px;
  --tt-shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.06);
  --tt-shadow: 0 4px 14px rgba(16, 24, 40, 0.08);
  --tt-shadow-lg: 0 18px 40px rgba(16, 24, 40, 0.16);

  --tt-sidebar-width: 248px;
  --tt-header-height: 60px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--tt-background);
  color: var(--tt-text);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--tt-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 { margin: 0 0 8px; font-weight: 650; letter-spacing: -0.01em; color: var(--tt-text); }
h1 { font-size: 24px; }
h2 { font-size: 18px; }
h3 { font-size: 15px; }
p  { margin: 0 0 12px; }

.muted { color: var(--tt-muted); }
.small { font-size: 12px; }
.strong { font-weight: 600; }
.text-right { text-align: right; }
.center { text-align: center; }
.nowrap { white-space: nowrap; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.hidden { display: none !important; }
.mt-0 { margin-top: 0; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 16px; }
.mt-4 { margin-top: 24px; }
.mb-2 { margin-bottom: 8px; }
.mb-3 { margin-bottom: 16px; }
.gap-2 { gap: 8px; }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.grow { flex: 1; min-width: 0; }

/* ---------------- Auth screens ---------------- */
.auth-wrap {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr;
  background: var(--tt-background);
}
@media (min-width: 900px) {
  .auth-wrap { grid-template-columns: 1fr 1fr; }
}
.auth-side {
  display: none;
  padding: 56px;
  color: #fff;
  background: radial-gradient(1200px 600px at 10% 10%, #1d2939 0%, #101828 60%);
  position: relative;
  overflow: hidden;
}
@media (min-width: 900px) { .auth-side { display: block; } }
.auth-side::after {
  content: "";
  position: absolute;
  inset: auto -80px -120px auto;
  width: 420px; height: 420px;
  border-radius: 50%;
  background: var(--tt-gradient);
  filter: blur(90px);
  opacity: 0.55;
}
.auth-side h2 { color: #fff; font-size: 30px; line-height: 1.25; max-width: 420px; }
.auth-side p { color: #98a2b3; max-width: 420px; }
.lifecycle { list-style: none; padding: 0; margin: 32px 0 0; position: relative; z-index: 1; }
.lifecycle li { display: flex; align-items: center; gap: 12px; padding: 9px 0; color: #e4e7ec; }
.lifecycle .dot { width: 10px; height: 10px; border-radius: 50%; flex: none; }

.auth-panel { display: flex; align-items: center; justify-content: center; padding: 32px 20px; }
.auth-card {
  width: 100%; max-width: 400px;
  background: var(--tt-surface);
  border: 1px solid var(--tt-border);
  border-radius: var(--tt-radius-lg);
  box-shadow: var(--tt-shadow);
  padding: 32px;
}
.auth-card .logo { display: block; max-width: 168px; margin: 0 auto 20px; }

/* ---------------- Form controls ---------------- */
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; }
.input, .select, .textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--tt-border-strong);
  border-radius: var(--tt-radius-sm);
  background: #fff;
  font: inherit;
  color: var(--tt-text);
  transition: border-color .15s, box-shadow .15s;
}
.input:focus, .select:focus, .textarea:focus {
  outline: none;
  border-color: var(--tt-primary);
  box-shadow: 0 0 0 3px rgba(46, 155, 240, 0.16);
}
.textarea { min-height: 96px; resize: vertical; }
.checkbox-row { display: flex; align-items: center; gap: 8px; font-size: 13px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 9px 16px;
  border: 1px solid transparent;
  border-radius: var(--tt-radius-sm);
  font: inherit; font-weight: 600;
  cursor: pointer;
  transition: background .15s, box-shadow .15s, border-color .15s, transform .05s;
  white-space: nowrap;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--tt-primary); color: #fff; }
.btn-primary:hover { background: var(--tt-primary-dark); }
.btn-accent { background: var(--tt-accent); color: #fff; }
.btn-success { background: var(--tt-success); color: #fff; }
.btn-danger { background: var(--tt-danger); color: #fff; }
.btn-ghost { background: transparent; color: var(--tt-muted); }
.btn-ghost:hover { background: var(--tt-surface-alt); color: var(--tt-text); }
.btn-outline { background: #fff; border-color: var(--tt-border-strong); color: var(--tt-text); }
.btn-outline:hover { border-color: var(--tt-primary); color: var(--tt-primary); }
.btn-block { width: 100%; }
.btn-sm { padding: 6px 11px; font-size: 13px; }
.btn-icon { padding: 7px; width: 34px; height: 34px; }

/* ---------------- App shell ---------------- */
.app { min-height: 100vh; }

.sidebar {
  position: fixed; top: 0; left: 0; bottom: 0;
  width: var(--tt-sidebar-width);
  background: var(--tt-sidebar);
  color: var(--tt-sidebar-text);
  display: flex; flex-direction: column;
  z-index: 60;
  transition: transform .2s ease;
}
.sidebar-brand {
  display: flex; align-items: center; gap: 10px;
  height: var(--tt-header-height);
  padding: 0 16px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.sidebar-brand img { height: 30px; width: auto; }
.sidebar-brand .name { color: #fff; font-weight: 700; letter-spacing: -0.01em; }
.sidebar-scroll { flex: 1; overflow-y: auto; padding: 12px 10px 24px; }
.nav-label {
  font-size: 11px; text-transform: uppercase; letter-spacing: .07em;
  color: #667085; padding: 16px 10px 6px; font-weight: 700;
}
.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 10px; margin-bottom: 2px;
  border-radius: var(--tt-radius-sm);
  color: var(--tt-sidebar-text); font-weight: 500;
}
.nav-item:hover { background: var(--tt-sidebar-hover); color: #fff; text-decoration: none; }
.nav-item.active { background: rgba(46,155,240,.16); color: #fff; }
.nav-item.active .nav-icon { color: var(--tt-primary); }
.nav-icon { width: 18px; height: 18px; flex: none; color: #98a2b3; }
.nav-count {
  margin-left: auto; background: var(--tt-accent); color: #fff;
  font-size: 11px; font-weight: 700; border-radius: 999px; padding: 1px 7px;
}
.space-dot { width: 9px; height: 9px; border-radius: 3px; flex: none; }
.sidebar-footer { padding: 12px; border-top: 1px solid rgba(255,255,255,.08); }

.main { margin-left: var(--tt-sidebar-width); min-height: 100vh; display: flex; flex-direction: column; }

.topbar {
  position: sticky; top: 0; z-index: 50;
  height: var(--tt-header-height);
  background: var(--tt-surface);
  border-bottom: 1px solid var(--tt-border);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 16px;
  padding: 0 20px;
}
.search-box { position: relative; max-width: 420px; width: 100%; }
.search-box input {
  width: 100%; padding: 8px 12px 8px 34px;
  border: 1px solid var(--tt-border); border-radius: 999px;
  background: var(--tt-surface-alt); font: inherit;
}
.search-box input:focus { outline: none; background: #fff; border-color: var(--tt-primary); }
.search-box svg { position: absolute; left: 11px; top: 9px; width: 16px; height: 16px; color: var(--tt-muted); }
.topbar-actions { display: flex; align-items: center; gap: 8px; }
.icon-btn {
  position: relative; display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: var(--tt-radius-sm);
  border: 1px solid transparent; background: transparent; cursor: pointer; color: var(--tt-muted);
}
.icon-btn:hover { background: var(--tt-surface-alt); color: var(--tt-text); }
.icon-btn .badge {
  position: absolute; top: 4px; right: 4px; min-width: 16px; height: 16px;
  border-radius: 999px; background: var(--tt-accent); color: #fff;
  font-size: 10px; font-weight: 700; display: grid; place-items: center; padding: 0 4px;
}

.avatar {
  width: 30px; height: 30px; border-radius: 50%;
  display: inline-grid; place-items: center; flex: none;
  color: #fff; font-size: 11px; font-weight: 700; letter-spacing: .02em;
}
.avatar-lg { width: 40px; height: 40px; font-size: 14px; }
.avatar-sm { width: 24px; height: 24px; font-size: 10px; }
.avatar-stack { display: flex; }
.avatar-stack .avatar + .avatar { margin-left: -8px; border: 2px solid #fff; }

.page { padding: 24px; flex: 1; }
.page-head {
  display: grid; grid-template-columns: minmax(0,1fr) auto;
  align-items: center; gap: 16px; margin-bottom: 20px;
}
.page-head .subtitle { color: var(--tt-muted); font-size: 13px; }
.page-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.breadcrumb { display: flex; gap: 6px; align-items: center; color: var(--tt-muted); font-size: 12px; margin-bottom: 4px; }

/* ---------------- Cards, tables, badges ---------------- */
.card {
  background: var(--tt-surface);
  border: 1px solid var(--tt-border);
  border-radius: var(--tt-radius);
  box-shadow: var(--tt-shadow-sm);
}
.card-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 16px; border-bottom: 1px solid var(--tt-border);
}
.card-body { padding: 16px; }

.grid { display: grid; gap: 16px; }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
@media (max-width: 1100px) { .grid-4 { grid-template-columns: repeat(2, minmax(0,1fr)); } .grid-3 { grid-template-columns: repeat(2, minmax(0,1fr)); } }
@media (max-width: 720px) { .grid-4, .grid-3, .grid-2 { grid-template-columns: minmax(0,1fr); } }

.kpi { padding: 16px; }
.kpi .label { color: var(--tt-muted); font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .05em; }
.kpi .value { font-size: 28px; font-weight: 700; letter-spacing: -0.02em; margin-top: 6px; }
.kpi .trend { font-size: 12px; color: var(--tt-muted); margin-top: 4px; }
.kpi-accent { border-left: 3px solid var(--tt-primary); }
.kpi-danger { border-left: 3px solid var(--tt-danger); }
.kpi-warning { border-left: 3px solid var(--tt-warning); }
.kpi-success { border-left: 3px solid var(--tt-success); }

.table { width: 100%; border-collapse: collapse; font-size: 13px; }
.table th {
  text-align: left; font-size: 11px; text-transform: uppercase; letter-spacing: .05em;
  color: var(--tt-muted); font-weight: 700;
  padding: 10px 12px; border-bottom: 1px solid var(--tt-border); background: var(--tt-surface-alt);
  position: sticky; top: 0; z-index: 1;
}
.table td { padding: 11px 12px; border-bottom: 1px solid var(--tt-border); vertical-align: middle; }
.table tbody tr:hover { background: #fbfcfe; }
.table-wrap { overflow-x: auto; border-radius: var(--tt-radius); }

.badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 3px 10px; border-radius: 999px;
  font-size: 12px; font-weight: 600; white-space: nowrap;
}
.badge .dot { width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px; border-radius: var(--tt-radius-sm);
  font-size: 12px; font-weight: 600; color: #fff;
}
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 3px 9px; border-radius: 999px; font-size: 12px;
  background: var(--tt-surface-alt); border: 1px solid var(--tt-border); color: var(--tt-muted);
}
.priority { font-size: 12px; font-weight: 600; display: inline-flex; align-items: center; gap: 5px; }
.priority-urgent { color: var(--tt-danger); }
.priority-high { color: var(--tt-orange); }
.priority-normal { color: var(--tt-primary); }
.priority-low { color: var(--tt-muted); }
.overdue { color: var(--tt-danger); font-weight: 600; }

.progress { height: 6px; border-radius: 999px; background: var(--tt-border); overflow: hidden; }
.progress > span { display: block; height: 100%; border-radius: 999px; background: var(--tt-primary); }

/* ---------------- Views: toolbar, list, board ---------------- */
.view-tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--tt-border); margin-bottom: 16px; overflow-x: auto; }
.view-tab {
  padding: 9px 14px; font-weight: 600; font-size: 13px; color: var(--tt-muted);
  border-bottom: 2px solid transparent; white-space: nowrap;
}
.view-tab:hover { color: var(--tt-text); text-decoration: none; }
.view-tab.active { color: var(--tt-primary); border-bottom-color: var(--tt-primary); }

.toolbar {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
  padding: 10px 12px; background: var(--tt-surface);
  border: 1px solid var(--tt-border); border-radius: var(--tt-radius);
  margin-bottom: 16px;
}
.toolbar .select, .toolbar .input { width: auto; min-width: 140px; padding: 7px 10px; font-size: 13px; }

.group-head {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 4px; font-weight: 700; font-size: 13px;
}
.group-head .count { color: var(--tt-muted); font-weight: 600; }

.board { display: flex; gap: 14px; align-items: flex-start; overflow-x: auto; padding-bottom: 20px; }
.board-col {
  flex: 0 0 300px; width: 300px;
  background: #eef1f6; border-radius: var(--tt-radius); padding: 10px;
}
.board-col-head {
  display: flex; align-items: center; gap: 8px;
  padding: 4px 4px 10px; font-size: 13px; font-weight: 700;
}
.board-col-head .count {
  background: #fff; border-radius: 999px; padding: 0 8px;
  font-size: 11px; color: var(--tt-muted);
}
.board-card {
  display: block; background: #fff; border: 1px solid var(--tt-border);
  border-radius: var(--tt-radius-sm); padding: 12px; margin-bottom: 8px;
  box-shadow: var(--tt-shadow-sm); color: var(--tt-text);
  border-top: 3px solid var(--tt-primary);
}
.board-card:hover { box-shadow: var(--tt-shadow); text-decoration: none; }
.board-card .title { font-weight: 600; margin-bottom: 8px; }
.board-card .meta { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-top: 10px; }
.board-card.dragging { opacity: .5; }
.board-col.drop-target { outline: 2px dashed var(--tt-primary); outline-offset: -4px; }

/* ---------------- Task detail ---------------- */
.detail-grid { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 16px; }
@media (max-width: 1000px) { .detail-grid { grid-template-columns: minmax(0,1fr); } }
.prop-row { display: grid; grid-template-columns: 130px minmax(0,1fr); gap: 10px; align-items: center; padding: 8px 0; border-bottom: 1px solid var(--tt-border); }
.prop-row:last-child { border-bottom: none; }
.prop-row .label { color: var(--tt-muted); font-size: 12px; font-weight: 600; }

.timeline { list-style: none; margin: 0; padding: 0; }
.timeline li { display: flex; gap: 10px; padding: 10px 0; border-bottom: 1px dashed var(--tt-border); }
.timeline li:last-child { border-bottom: none; }

.comment { display: flex; gap: 10px; padding: 12px 0; border-bottom: 1px solid var(--tt-border); }
.comment:last-child { border-bottom: none; }
.comment .body { background: var(--tt-surface-alt); border-radius: var(--tt-radius-sm); padding: 10px 12px; }

.checklist-item { display: flex; align-items: center; gap: 10px; padding: 7px 0; }
.checklist-item.done label { text-decoration: line-through; color: var(--tt-muted); }

/* ---------------- Alerts & misc ---------------- */
.alert { padding: 11px 14px; border-radius: var(--tt-radius-sm); margin-bottom: 16px; font-size: 13px; border: 1px solid transparent; }
.alert-error { background: var(--tt-danger-light); color: #952f2f; border-color: #f6cfcf; }
.alert-success { background: var(--tt-success-light); color: #07603a; border-color: #bce9d3; }
.alert-info { background: var(--tt-primary-light); color: #10527f; border-color: #c3e2fb; }
.alert-warning { background: var(--tt-warning-light); color: #8a5306; border-color: #fadfb4; }

.empty { text-align: center; padding: 48px 20px; color: var(--tt-muted); }
.empty h3 { color: var(--tt-text); }

.modal-backdrop {
  position: fixed; inset: 0; background: rgba(16,24,40,.5);
  display: none; align-items: flex-start; justify-content: center;
  padding: 60px 16px; z-index: 100; overflow-y: auto;
}
.modal-backdrop.open { display: flex; }
.modal {
  width: 100%; max-width: 560px; background: #fff;
  border-radius: var(--tt-radius-lg); box-shadow: var(--tt-shadow-lg);
}
.modal-head { display: flex; align-items: center; justify-content: space-between; padding: 16px 20px; border-bottom: 1px solid var(--tt-border); }
.modal-body { padding: 20px; }
.modal-foot { display: flex; justify-content: flex-end; gap: 8px; padding: 14px 20px; border-top: 1px solid var(--tt-border); }

.dropdown { position: relative; }
.dropdown-menu {
  position: absolute; right: 0; top: calc(100% + 6px);
  min-width: 240px; background: #fff; border: 1px solid var(--tt-border);
  border-radius: var(--tt-radius); box-shadow: var(--tt-shadow-lg);
  padding: 6px; display: none; z-index: 80;
}
.dropdown.open .dropdown-menu { display: block; }
.dropdown-item { display: flex; gap: 10px; align-items: center; padding: 9px 10px; border-radius: var(--tt-radius-sm); color: var(--tt-text); font-size: 13px; }
.dropdown-item:hover { background: var(--tt-surface-alt); text-decoration: none; }
.dropdown-sep { height: 1px; background: var(--tt-border); margin: 6px 0; }

.sidebar-toggle { display: none; }

/* ---------------- Responsive ---------------- */
@media (max-width: 960px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); box-shadow: var(--tt-shadow-lg); }
  .main { margin-left: 0; }
  .sidebar-toggle { display: inline-flex; }
  .page { padding: 16px; }
  .page-head { grid-template-columns: minmax(0,1fr); }
}
@media (max-width: 640px) {
  .search-box { max-width: none; }
  .kpi .value { font-size: 22px; }
}

/* ---------------- Print (job cards) ---------------- */
@media print {
  .sidebar, .topbar, .page-actions, .no-print { display: none !important; }
  .main { margin-left: 0; }
  body { background: #fff; }
  .card { box-shadow: none; border-color: #ccc; }
}

/* ---------------- Tabs, charts, calendar (stage 3) ---------------- */
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--tt-border); margin-bottom: 18px; overflow-x: auto; }
.tab {
  padding: 9px 14px; font-weight: 600; font-size: 13px; color: var(--tt-muted);
  border-bottom: 2px solid transparent; text-decoration: none; white-space: nowrap;
}
.tab:hover { color: var(--tt-text); }
.tab.active { color: var(--tt-primary); border-bottom-color: var(--tt-primary); }

.kpi-label { display: block; color: var(--tt-muted); font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .05em; }
.kpi-value { display: block; font-size: 28px; font-weight: 700; letter-spacing: -0.02em; margin-top: 6px; }
.progress { display: inline-block; width: 120px; vertical-align: middle; }
.progress-fill { display: block; height: 100%; border-radius: 999px; background: var(--tt-primary); }

.bar-row { display: grid; grid-template-columns: 130px 1fr 40px; align-items: center; gap: 10px; margin-bottom: 10px; }
.bar-label { font-size: 13px; color: var(--tt-muted); }
.bar-track { height: 10px; border-radius: 999px; background: var(--tt-surface-2, #f2f4f7); overflow: hidden; }
.bar-fill { display: block; height: 100%; border-radius: 999px; background: var(--tt-primary); }
.bar-value { font-size: 13px; font-weight: 700; text-align: right; }

.calendar { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 1px; background: var(--tt-border); }
.calendar-dow { background: #fff; padding: 10px; font-size: 12px; font-weight: 700; color: var(--tt-muted); text-transform: uppercase; letter-spacing: .05em; }
.calendar-cell { background: #fff; min-height: 118px; padding: 8px; }
.calendar-cell.muted-cell { background: #fafbfc; }
.calendar-cell.is-today { background: var(--tt-primary-light, #f3f1fe); }
.calendar-date { font-size: 12px; font-weight: 700; color: var(--tt-muted); margin-bottom: 6px; }
.calendar-event {
  display: block; font-size: 12px; padding: 4px 6px; margin-bottom: 4px; border-radius: 6px;
  background: #f7f8fa; border-left: 3px solid var(--tt-primary); color: var(--tt-text);
  text-decoration: none; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.calendar-event:hover { background: #eef0f4; }
@media (max-width: 820px) {
  .calendar { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .calendar-dow { display: none; }
  .calendar-cell { min-height: 80px; }
  .bar-row { grid-template-columns: 100px 1fr 34px; }
}