:root {
  --primary: #3525cd;
  --primary-container: #e2dfff;
  --secondary: #006591;
  --secondary-container: #c9e6ff;
  --tertiary: #3130c0;
  --error: #ba1a1a;
  --error-container: #ffdad6;
  --surface: #f8f9ff;
  --surface-bright: #ffffff;
  --surface-container-lowest: #ffffff;
  --surface-container-low: #eff4ff;
  --surface-container: #e5eeff;
  --surface-container-high: #dce9ff;
  --surface-container-highest: #d3e4fe;
  --background: #f8f9ff;
  --on-surface: #0b1c30;
  --on-surface-variant: #464555;
  --outline: #777587;
  --outline-variant: #c7c4d8;
  --radius: 14px;
  --density: 1;
  --sidebar-width: 260px;
  --topbar-height: 68px;
  --shadow-1: 0 1px 3px rgba(15, 23, 42, .10), 0 1px 2px rgba(15, 23, 42, .06);
  --shadow-2: 0 10px 25px rgba(15, 23, 42, .10), 0 2px 8px rgba(15, 23, 42, .06);
  --shadow-3: 0 20px 55px rgba(15, 23, 42, .18);
  color-scheme: light;
}

[data-theme="dark"] {
  --surface: #111827;
  --surface-bright: #172033;
  --surface-container-lowest: #0b1220;
  --surface-container-low: #121c2d;
  --surface-container: #182237;
  --surface-container-high: #21304a;
  --surface-container-highest: #2b3a56;
  --background: #0b1220;
  --on-surface: #eaf1ff;
  --on-surface-variant: #b8c2d6;
  --outline: #8994a8;
  --outline-variant: #374257;
  --primary-container: #3323cc;
  --secondary-container: #004c6e;
  --error-container: #5f1717;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { min-height: 100%; }
body {
  margin: 0;
  background: var(--background);
  color: var(--on-surface);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 15px;
  line-height: 1.5;
}
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
button:disabled { cursor: not-allowed; opacity: .55; }
a { color: inherit; }

.material-symbols-outlined {
  font-family: 'Material Symbols Outlined';
  font-weight: normal;
  font-style: normal;
  font-size: 22px;
  line-height: 1;
  letter-spacing: normal;
  text-transform: none;
  display: inline-flex;
  white-space: nowrap;
  word-wrap: normal;
  direction: ltr;
  -webkit-font-feature-settings: 'liga';
  -webkit-font-smoothing: antialiased;
  font-variation-settings: 'FILL' 0, 'wght' 450, 'GRAD' 0, 'opsz' 24;
}
.fill { font-variation-settings: 'FILL' 1, 'wght' 500, 'GRAD' 0, 'opsz' 24; }

.app-shell { min-height: 100vh; }
.layout { display: grid; grid-template-columns: var(--sidebar-width) minmax(0, 1fr); min-height: 100vh; }
.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  background: var(--surface-container-low);
  border-right: 1px solid var(--outline-variant);
  padding: 22px 14px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  z-index: 40;
}
.brand { display: flex; align-items: center; gap: 10px; padding: 0 8px; }
.brand-mark {
  width: 38px; height: 38px; border-radius: 12px;
  background: var(--primary);
  color: white;
  display: grid; place-items: center;
  box-shadow: var(--shadow-1);
}
.brand-title { font-size: 21px; line-height: 1.1; margin: 0; color: var(--primary); font-weight: 800; }
.brand-subtitle { margin: 2px 0 0; color: var(--on-surface-variant); font-size: 12px; font-weight: 650; letter-spacing: .05em; text-transform: uppercase; }

.nav { display: flex; flex-direction: column; gap: 6px; }
.nav-group { flex: 1; }
.nav-item {
  width: 100%; border: 0; background: transparent; color: var(--on-surface-variant);
  display: flex; align-items: center; gap: 12px;
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: calc(9px * var(--density)) 12px;
  text-align: left;
  border-left: 4px solid transparent;
  transition: background .15s ease, color .15s ease, border .15s ease;
}
.nav-item:hover { background: var(--surface-container-high); color: var(--on-surface); }
.nav-item.active { background: color-mix(in srgb, var(--primary) 17%, var(--surface)); color: var(--on-surface); border-left-color: var(--primary); font-weight: 700; }
.sidebar-footer { margin-top: auto; border-top: 1px solid var(--outline-variant); padding-top: 14px; }
.user-mini { display: flex; align-items: center; gap: 10px; padding: 8px; border-radius: var(--radius); }
.user-avatar, .avatar {
  width: 34px; height: 34px; border-radius: 999px; display: inline-grid; place-items: center;
  color: white; background: var(--secondary); font-weight: 750; font-size: 12px; flex: 0 0 auto;
  border: 2px solid color-mix(in srgb, var(--surface) 75%, white);
}
.avatar.sm { width: 25px; height: 25px; font-size: 10px; border-width: 1px; }
.avatar.lg { width: 50px; height: 50px; font-size: 15px; }
.user-name { font-weight: 700; margin: 0; font-size: 13px; }
.user-role { margin: 0; color: var(--on-surface-variant); font-size: 12px; }

.main { min-width: 0; display: flex; flex-direction: column; min-height: 100vh; }
.topbar {
  height: var(--topbar-height);
  display: flex; align-items: center; gap: 16px; justify-content: space-between;
  padding: 0 26px;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  border-bottom: 1px solid var(--outline-variant);
  backdrop-filter: blur(10px);
  position: sticky; top: 0; z-index: 30;
}
.searchbox { position: relative; min-width: 240px; max-width: 520px; flex: 1; }
.searchbox span { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); color: var(--on-surface-variant); }
.searchbox input { width: 100%; padding: 10px 12px 10px 42px; border: 1px solid var(--outline-variant); border-radius: calc(var(--radius) - 3px); background: var(--surface-container-lowest); color: var(--on-surface); outline: none; }
.searchbox input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 22%, transparent); }
.top-actions { display: flex; align-items: center; gap: 8px; }
.nav-history-actions { display: inline-flex; align-items: center; gap: 4px; flex: 0 0 auto; }
.nav-history-actions .icon-btn { width: 36px; height: 36px; }
.mobile-menu { display: none; }
.content { padding: 28px; flex: 1; min-width: 0; }
.content-inner { max-width: 1440px; margin: 0 auto; }

.page-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 18px; margin-bottom: 24px; }
.kicker { color: var(--on-surface-variant); font-size: 12px; font-weight: 750; letter-spacing: .08em; text-transform: uppercase; margin: 0 0 4px; }
h1, h2, h3, h4 { margin: 0; line-height: 1.17; }
h1 { font-size: clamp(26px, 3vw, 38px); letter-spacing: -.025em; }
h2 { font-size: 24px; letter-spacing: -.015em; }
h3 { font-size: 18px; }
.muted { color: var(--on-surface-variant); }
.small { font-size: 13px; }

.btn {
  border: 1px solid var(--outline-variant);
  background: var(--surface-container-lowest);
  color: var(--on-surface);
  border-radius: calc(var(--radius) - 3px);
  padding: calc(9px * var(--density)) 13px;
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  font-weight: 650;
  transition: transform .12s ease, box-shadow .12s ease, background .12s ease, border .12s ease;
  min-height: 38px;
}
.btn:hover { background: var(--surface-container-low); border-color: var(--outline); }
.btn:active { transform: translateY(1px); }
.btn.primary { background: var(--primary); border-color: var(--primary); color: white; box-shadow: var(--shadow-1); }
.btn.primary:hover { background: color-mix(in srgb, var(--primary) 88%, black); }
.btn.ghost { background: transparent; border-color: transparent; color: var(--on-surface-variant); }
.btn.ghost:hover { background: var(--surface-container-low); color: var(--on-surface); }
.btn.danger { color: var(--error); border-color: color-mix(in srgb, var(--error) 30%, var(--outline-variant)); }
.icon-btn { width: 40px; height: 40px; padding: 0; border-radius: 999px; }

.grid { display: grid; gap: 16px; }
.grid.stats { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid.cards { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid.two { grid-template-columns: 2fr 1fr; gap: 22px; }
.card {
  background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius);
  box-shadow: var(--shadow-1);
  padding: calc(18px * var(--density));
}
.card.hover:hover { border-color: var(--primary); box-shadow: var(--shadow-2); }
.stat-card { display: flex; align-items: center; justify-content: space-between; min-height: 132px; }
.stat-label { margin: 0; color: var(--on-surface-variant); font-size: 12px; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; }
.stat-value { margin: 6px 0 0; font-size: 42px; line-height: 1; font-weight: 800; color: var(--primary); }
.stat-icon { width: 48px; height: 48px; border-radius: 999px; display: grid; place-items: center; background: var(--primary-container); color: var(--primary); }

.project-card { display: flex; flex-direction: column; gap: 14px; cursor: pointer; }
.project-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 10px; }
.project-icon { width: 43px; height: 43px; border-radius: 13px; display: grid; place-items: center; background: var(--surface-container-high); color: var(--primary); }
.project-title { font-size: 18px; font-weight: 750; }
.badge {
  display: inline-flex; align-items: center; gap: 6px; padding: 4px 9px; border-radius: 999px;
  font-size: 12px; font-weight: 750; border: 1px solid transparent; white-space: nowrap;
}
.badge.track { background: #e8f5e9; color: #1b5e20; }
.badge.risk { background: #fff3e0; color: #9a4c00; }
.badge.delay, .badge.blocked { background: var(--error-container); color: var(--error); border-color: color-mix(in srgb, var(--error) 20%, transparent); }
.badge.waiting { background: color-mix(in srgb, var(--tertiary) 10%, var(--surface)); color: var(--tertiary); }
.badge.done { background: var(--surface-container-high); color: var(--on-surface-variant); }
.badge.priority-high { background: var(--error-container); color: var(--error); }
.badge.priority-medium { background: #fff3e0; color: #9a4c00; }
.badge.priority-low { background: var(--surface-container-high); color: var(--on-surface-variant); }
.progress { width: 100%; height: 8px; background: var(--surface-container-high); border-radius: 999px; overflow: hidden; }
.progress > i { display: block; height: 100%; background: var(--primary); border-radius: 999px; width: 0; }
.avatar-stack { display: flex; align-items: center; }
.avatar-stack > * { margin-left: -8px; }
.avatar-stack > *:first-child { margin-left: 0; }

.split-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.toolbar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.input, .select, textarea {
  width: 100%; border: 1px solid var(--outline-variant); background: var(--surface-container-lowest); color: var(--on-surface);
  border-radius: calc(var(--radius) - 5px); padding: 9px 11px; outline: none;
}
.input:focus, .select:focus, textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 20%, transparent); }
textarea { min-height: 90px; resize: vertical; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 13px; }
.form-field { display: flex; flex-direction: column; gap: 6px; }
.form-field label { font-size: 12px; text-transform: uppercase; letter-spacing: .05em; font-weight: 750; color: var(--on-surface-variant); }

.kanban { display: flex; gap: 16px; overflow-x: auto; padding-bottom: 10px; min-height: 620px; }
.kanban-column { width: 318px; flex: 0 0 318px; background: var(--surface-container-low); border: 1px solid var(--outline-variant); border-radius: var(--radius); padding: 12px; display: flex; flex-direction: column; max-height: calc(100vh - 220px); min-height: 520px; }
.kanban-column.drag-over { outline: 3px solid color-mix(in srgb, var(--primary) 30%, transparent); }
.column-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 4px 3px 10px; }
.column-title { display: flex; align-items: center; gap: 8px; font-weight: 800; }
.dot { width: 10px; height: 10px; border-radius: 99px; background: var(--outline); flex: 0 0 auto; }
.task-list { display: flex; flex-direction: column; gap: 10px; overflow-y: auto; padding: 2px; }
.task-card { background: var(--surface-container-lowest); border: 1px solid var(--outline-variant); border-radius: calc(var(--radius) - 3px); padding: 13px; box-shadow: var(--shadow-1); cursor: grab; }
.task-card:hover { border-color: var(--primary); }
.task-card:active { cursor: grabbing; }
.task-title { font-weight: 750; margin: 8px 0 6px; }
.task-meta { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-top: 12px; color: var(--on-surface-variant); font-size: 12px; }
.task-icons { display: flex; align-items: center; gap: 8px; }
.task-card.blocked { border-color: var(--error); box-shadow: inset 3px 0 0 var(--error), var(--shadow-1); }
.subtask-line { display: flex; gap: 8px; align-items: center; color: var(--on-surface-variant); font-size: 12px; margin-top: 8px; }

.timeline-wrap { overflow: auto; background: var(--surface-container-lowest); border: 1px solid var(--outline-variant); border-radius: var(--radius); box-shadow: var(--shadow-1); }
.timeline { min-width: 980px; display: grid; grid-template-columns: 290px 1fr; }
.timeline-left, .timeline-right { position: relative; }
.timeline-header { display: contents; }
.timeline-cell { height: 48px; border-bottom: 1px solid var(--outline-variant); background: var(--surface-container-low); display: flex; align-items: center; padding: 0 14px; font-weight: 750; color: var(--on-surface-variant); font-size: 12px; text-transform: uppercase; letter-spacing: .05em; }
.months { display: grid; grid-template-columns: repeat(6, 1fr); border-bottom: 1px solid var(--outline-variant); background: var(--surface-container-low); }
.month { height: 48px; display: grid; place-items: center; border-left: 1px solid var(--outline-variant); font-size: 12px; font-weight: 750; color: var(--on-surface-variant); text-transform: uppercase; }
.timeline-row { display: contents; }
.timeline-name { min-height: 58px; display: flex; align-items: center; gap: 10px; padding: 10px 14px; border-bottom: 1px solid var(--outline-variant); background: var(--surface-container-lowest); }
.timeline-bar-lane { position: relative; min-height: 58px; border-bottom: 1px solid var(--outline-variant); background-image: linear-gradient(to right, var(--outline-variant) 1px, transparent 1px); background-size: calc(100% / 6) 100%; }
.timeline-bar { position: absolute; top: 14px; height: 30px; border-radius: 9px; background: var(--primary); color: white; display: flex; align-items: center; gap: 6px; padding: 0 10px; font-weight: 700; font-size: 12px; overflow: hidden; white-space: nowrap; box-shadow: var(--shadow-1); }
.timeline-bar.delay { background: var(--error-container); color: var(--error); border: 1px solid color-mix(in srgb, var(--error) 30%, transparent); }
.timeline-bar.waiting { background: var(--secondary-container); color: var(--secondary); }
.today-line { position: absolute; top: 0; bottom: 0; width: 2px; background: var(--primary); opacity: .65; left: 38%; pointer-events: none; }

.team-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 16px; }
.member-card { position: relative; overflow: hidden; }
.member-card::after { content: ''; position: absolute; top: -42px; right: -42px; width: 120px; height: 120px; border-radius: 999px; background: color-mix(in srgb, var(--primary) 9%, transparent); pointer-events: none; }
.skill-list { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.chip { display: inline-flex; align-items: center; gap: 5px; padding: 4px 8px; background: var(--surface-container-high); color: var(--on-surface-variant); border-radius: 8px; font-size: 12px; font-weight: 700; }

.settings-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(320px, .72fr); gap: 18px; align-items: start; }
.color-row { display: grid; grid-template-columns: 1fr 56px; gap: 10px; align-items: center; }
.color-row input[type="color"] { width: 56px; height: 40px; border: 0; padding: 0; background: transparent; }
.column-editor { display: flex; flex-direction: column; gap: 8px; }
.column-line { display: grid; grid-template-columns: 1fr 56px 42px; gap: 8px; align-items: center; }
.template-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 16px; }
.template-card { cursor: pointer; }
.template-card:hover { border-color: var(--primary); }

.confirm-backdrop { position: fixed; inset: 0; background: rgba(2, 6, 23, .52); display: grid; place-items: center; padding: 22px; z-index: 90; }
.confirm-dialog { background: var(--surface); border: 1px solid var(--outline-variant); border-radius: calc(var(--radius) + 4px); box-shadow: var(--shadow-3); width: min(420px, 100%); padding: 24px; display: grid; gap: 14px; text-align: center; }
.confirm-icon { font-size: 40px; color: var(--error); margin: 0 auto; }
.confirm-text strong { display: block; font-size: 17px; margin-bottom: 6px; }
.confirm-actions { display: flex; gap: 10px; justify-content: center; margin-top: 4px; }
.confirm-actions .btn { min-width: 120px; }
.confirm-actions .btn.danger { background: var(--error); border-color: var(--error); color: white; }
.confirm-actions .btn.danger:hover { background: color-mix(in srgb, var(--error) 88%, black); }
.modal-backdrop { position: fixed; inset: 0; background: rgba(2, 6, 23, .52); display: grid; place-items: center; padding: 22px; z-index: 80; }
.modal { width: min(980px, 100%); max-height: min(880px, 92vh); overflow: hidden; display: flex; flex-direction: column; background: var(--surface); border: 1px solid var(--outline-variant); border-radius: calc(var(--radius) + 4px); box-shadow: var(--shadow-3); }
.modal.small { width: min(680px, 100%); }
.modal-head { padding: 20px 22px; border-bottom: 1px solid var(--outline-variant); display: flex; justify-content: space-between; gap: 12px; align-items: flex-start; background: var(--surface-bright); }
.modal-body { padding: 22px; overflow: auto; }
.modal-foot { padding: 16px 22px; border-top: 1px solid var(--outline-variant); display: flex; justify-content: flex-end; gap: 10px; background: var(--surface-container-low); }
.task-detail-grid { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 20px; }
.detail-sidebar { display: flex; flex-direction: column; gap: 14px; }
.subtasks { display: flex; flex-direction: column; gap: 8px; }
.subtask { display: flex; gap: 10px; align-items: flex-start; padding: 10px; background: var(--surface-container-low); border: 1px solid var(--outline-variant); border-radius: 10px; }
.subtask.done { opacity: .72; text-decoration: line-through; }
.comment { display: flex; gap: 10px; margin-top: 12px; }
.comment-bubble { padding: 10px 12px; border: 1px solid var(--outline-variant); background: var(--surface-container-lowest); border-radius: 12px; flex: 1; }
.toast { position: fixed; right: 22px; bottom: 22px; z-index: 100; background: var(--on-surface); color: var(--surface); padding: 12px 14px; border-radius: 12px; box-shadow: var(--shadow-3); max-width: 360px; }
.empty { padding: 30px; text-align: center; color: var(--on-surface-variant); border: 1px dashed var(--outline-variant); border-radius: var(--radius); background: var(--surface-container-lowest); }

@media (max-width: 1060px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { position: fixed; transform: translateX(-110%); transition: transform .2s ease; width: min(310px, 86vw); box-shadow: var(--shadow-3); }
  .sidebar.open { transform: translateX(0); }
  .mobile-menu { display: inline-flex; }
  .grid.stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid.two, .settings-grid, .task-detail-grid { grid-template-columns: 1fr; }
  .content { padding: 20px; }
  .page-header { flex-direction: column; }
}

@media (max-width: 680px) {
  .topbar { padding: 0 12px; }
  .top-actions .btn:not(.icon-btn) span + span, .top-actions .btn:not(.icon-btn) { font-size: 0; }
  .searchbox { min-width: 0; }
  .grid.stats { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .kanban-column { width: 86vw; flex-basis: 86vw; }
  .modal-backdrop { padding: 0; place-items: stretch; }
  .modal { border-radius: 0; max-height: 100vh; height: 100vh; }
}