:root {
    --bg: #0f1115;
    --panel: #181b22;
    --panel-2: #1f232c;
    --border: #2a2f3a;
    --text: #e6e8ec;
    --muted: #9aa3b2;
    --accent: #4f8cff;
    --accent-dim: #2d4a85;
    --green: #3fb950;
    --yellow: #d29922;
    --red: #f85149;
    --purple: #a371f7;
    --radius: 10px;
    --shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

* { box-sizing: border-box; }

/* The HTML `hidden` attribute must beat element display rules (e.g. the
   modal's `display: flex`), otherwise hidden panels show on load. */
[hidden] { display: none !important; }

body {
    margin: 0;
    font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
}

/* Topbar */
.topbar {
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 10px 18px;
    background: var(--panel);
    border-bottom: 1px solid var(--border);
}
.brand { font-weight: 700; font-size: 16px; }
.tabs { display: flex; gap: 4px; }
.tab {
    background: transparent;
    color: var(--muted);
    border: none;
    padding: 6px 14px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
}
.tab:hover { background: var(--panel-2); color: var(--text); }
.tab.active { background: var(--accent-dim); color: #fff; }
.topbar-spacer { flex: 1; }
.api-link { color: var(--muted); text-decoration: none; font-size: 13px; }
.api-link:hover { color: var(--accent); }

/* Layout */
.layout { display: flex; height: calc(100vh - 53px); }
.sidebar {
    width: 320px;
    min-width: 260px;
    border-right: 1px solid var(--border);
    background: var(--panel);
    overflow-y: auto;
    padding: 12px;
}
.sidebar-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
}
.sidebar-head h2 { font-size: 13px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin: 0; }
.detail { flex: 1; overflow-y: auto; padding: 24px 28px; }

.empty-state { color: var(--muted); margin-top: 40px; text-align: center; }

/* Project tree */
.tree-node { margin: 2px 0; }
.tree-row {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 8px;
    border-radius: 8px;
    cursor: pointer;
}
.tree-row:hover { background: var(--panel-2); }
.tree-row.selected { background: var(--accent-dim); }
.tree-row .twisty { width: 14px; color: var(--muted); flex-shrink: 0; text-align: center; }
.tree-row .name { flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tree-row .count { color: var(--muted); font-size: 12px; }
.tree-children { margin-left: 16px; border-left: 1px solid var(--border); padding-left: 4px; }

/* Detail header */
.detail-head { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 6px; }
.detail-head h1 { font-size: 22px; margin: 0; flex: 1; }
.detail-desc { color: var(--muted); margin: 4px 0 18px; max-width: 760px; }
.detail-meta { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 20px; }

/* Badges / chips */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 3px 9px;
    border-radius: 20px;
    font-size: 12px;
    background: var(--panel-2);
    border: 1px solid var(--border);
    color: var(--muted);
}
.badge.status-active, .badge.status-in_progress { color: var(--green); border-color: var(--green); }
.badge.status-planning, .badge.status-todo { color: var(--muted); }
.badge.status-on_hold, .badge.status-blocked { color: var(--yellow); border-color: var(--yellow); }
.badge.status-completed, .badge.status-done { color: var(--accent); border-color: var(--accent); }
.badge.status-cancelled { color: var(--red); border-color: var(--red); }
.badge.prio-critical { color: var(--red); border-color: var(--red); }
.badge.prio-high { color: var(--yellow); }
.badge.risk { color: var(--red); border-color: var(--red); }
.badge.critical { color: var(--purple); border-color: var(--purple); }
.badge.role-admin { color: var(--accent); border-color: var(--accent); }
.badge.role-member { color: var(--muted); }

.risk-text { color: var(--red); }
.sub { color: var(--muted); font-size: 11px; }

/* Sections */
.section { margin-bottom: 28px; }
.section-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.section-head h3 { margin: 0; font-size: 15px; }
.section-actions { display: flex; align-items: center; gap: 10px; }
.seg { display: inline-flex; gap: 2px; margin-left: 12px; background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 2px; }
.seg .btn { border: none; background: transparent; }
.seg .btn.active { background: var(--accent); color: #fff; }

/* Task board */
.board { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 12px; }
.column { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 10px; }
.column-head { font-size: 12px; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); margin-bottom: 8px; display: flex; justify-content: space-between; }
.card {
    background: var(--panel-2);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 9px 10px;
    margin-bottom: 8px;
    cursor: pointer;
}
.card:hover { border-color: var(--accent); }
.card-title { font-weight: 500; margin-bottom: 6px; }
.card-meta { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.card-assignee { color: var(--muted); font-size: 12px; }
.type-tag { font-size: 11px; color: var(--purple); }

/* Tables (team) */
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .05em; }
.cap-bar { background: var(--panel-2); border-radius: 6px; height: 8px; overflow: hidden; width: 120px; }
.cap-fill { height: 100%; background: var(--accent); }

/* Timeline / Gantt */
.risk-list {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px 14px;
    margin-bottom: 14px;
}
.risk-list-head { font-size: 12px; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); margin-bottom: 8px; }
.risk-row { display: flex; align-items: flex-start; gap: 8px; padding: 4px 0; }
.risk-row .dot { width: 8px; height: 8px; border-radius: 50%; margin-top: 5px; flex-shrink: 0; }
.risk-row.crit .dot { background: var(--red); }
.risk-row.warn .dot { background: var(--yellow); }
.risk-row.crit { color: var(--text); }

.legend { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 8px; color: var(--muted); font-size: 12px; }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.legend .sw { width: 14px; height: 10px; border-radius: 2px; display: inline-block; }
.legend .sw.diamond { transform: rotate(45deg); width: 10px; height: 10px; }
.legend .sw.circle { border-radius: 50%; width: 11px; height: 11px; }

.gantt {
    display: flex;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--panel);
    overflow: hidden;
}
.gantt-labels {
    flex: 0 0 auto;            /* fixed column — stays put while the chart scrolls */
    border-right: 1px solid var(--border);
    background: var(--panel);
}
.gl-row {
    display: flex; align-items: center; box-sizing: border-box;
    padding: 0 8px; font-size: 12px; white-space: nowrap; overflow: hidden;
    text-overflow: ellipsis; cursor: grab; color: var(--text);
}
.gl-row:hover { background: var(--panel-2); }
.gl-row.dragging { opacity: 0.5; background: var(--panel-2); }
.gantt-scroll { overflow-x: auto; flex: 1; min-width: 0; }
.gantt-controls { display: flex; align-items: center; gap: 6px; margin: 8px 0; }
.gantt-bar { cursor: grab; }
.gantt-bar.dragging { cursor: grabbing; opacity: 0.65; }
.gantt-node { cursor: grab; }
.gantt-node.dragging { cursor: grabbing; opacity: 0.65; }

.gantt-tip {
    position: fixed;
    z-index: 80;
    max-width: 280px;
    background: var(--panel-2);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 7px 10px;
    border-radius: 6px;
    font-size: 12px;
    line-height: 1.4;
    white-space: pre-line;     /* honor the 
 line break in the tip text */
    pointer-events: none;
    box-shadow: var(--shadow);
}

/* Dashboard */
.focus-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; }
.focus-card {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px 14px;
    cursor: pointer;
}
.focus-card:hover { border-color: var(--accent); }
.focus-title { font-weight: 600; margin-bottom: 2px; }
.focus-card .card-meta { margin: 9px 0 6px; }
.focus-people { margin-top: 2px; }

tr.clickable { cursor: pointer; }
tr.clickable:hover td { background: var(--panel-2); }

/* Dashboard filter / order / group controls */
.dash-controls {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 12px;
    padding: 12px 14px;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}
.control-row { display: flex; flex-wrap: wrap; gap: 10px; align-items: flex-end; }
.control-row.arrange-row { border-top: 1px solid var(--border); padding-top: 10px; }
.ctrl { display: flex; flex-direction: column; gap: 3px; font-size: 12px; color: var(--muted); }
.ctrl select { width: auto; min-width: 130px; }
.ctrl-toggle {
    flex-direction: row;
    align-items: center;
    gap: 6px;
    background: var(--bg);
    border: 1px solid var(--border);
    padding: 7px 11px;
    border-radius: 8px;
    color: var(--text);
    cursor: pointer;
    font-size: 13px;
}
.ctrl-toggle input { width: auto; }
.saved-views { display: flex; gap: 6px; align-items: center; margin-left: auto; }
.saved-views select { width: auto; min-width: 140px; }
.group-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 18px 0 6px;
    padding-bottom: 5px;
    font-weight: 600;
    border-bottom: 1px solid var(--border);
}
.checkbox-field { display: flex; align-items: center; gap: 8px; margin-top: 12px; }
.checkbox-field input[type="checkbox"] { width: auto; }
.checkbox-field label { margin: 0; }

/* Resource allocation heat-grid */
.alloc-scroll {
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 10px;
}
.alloc-grid { border-collapse: collapse; width: 100%; }
.alloc-grid th, .alloc-grid td {
    border: 1px solid var(--border);
    padding: 8px 12px;
    text-align: center;
    white-space: nowrap;
}
.alloc-grid th {
    background: var(--panel);
    color: var(--muted);
    font-size: 12px;
    font-weight: 600;
}
.alloc-grid th .sub { font-weight: 400; }
.alloc-grid .sticky-col {
    position: sticky;
    left: 0;
    z-index: 1;
    background: var(--panel);
    text-align: left;
}
.alloc-name { min-width: 160px; }
.alloc-cell.util-ok { background: rgba(63, 185, 80, 0.16); }
.alloc-cell.util-high { background: rgba(210, 153, 34, 0.22); }
.alloc-cell.util-over { background: rgba(248, 81, 73, 0.26); color: #fff; font-weight: 600; }
/* A week with holidays / time off gets a subtle diagonal hatch. */
.alloc-cell.alloc-off {
    background-image: repeating-linear-gradient(45deg, transparent, transparent 5px, rgba(163, 113, 247, 0.18) 5px, rgba(163, 113, 247, 0.18) 10px);
}

/* Time off / holidays list inside modals */
.timeoff-list { display: flex; flex-direction: column; gap: 6px; margin-bottom: 6px; }
.timeoff-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 7px 10px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
}

/* Multi-contributor editor */
.assignments-editor {
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 10px;
    background: var(--bg);
}
/* Checklist editor (task modal) */
.checklist-editor { display: flex; flex-direction: column; gap: 6px; }
.chk-rows { display: flex; flex-direction: column; gap: 4px; }
.chk-row { display: flex; align-items: center; gap: 6px; }
.chk-row .chk-drag { cursor: grab; color: var(--muted); user-select: none; }
.chk-row .chk-text { flex: 1; }
.chk-row.done .chk-text { text-decoration: line-through; color: var(--muted); }
.chk-row.dragging { opacity: 0.5; }
.chk-row input[type="checkbox"] { width: auto; }

/* Dependency editor (predecessor + type rows) */
.depends-editor { display: flex; flex-direction: column; gap: 6px; }
.dep-rows { display: flex; flex-direction: column; gap: 6px; }
.dep-row { display: flex; gap: 6px; align-items: center; }
.dep-row .dep-pred { flex: 1; }
.dep-row .dep-type { flex: 0 0 150px; }

/* Timeline (start/due/duration) editor */
.dates-field { display: flex; gap: 10px; }
.dates-col { flex: 1; display: flex; flex-direction: column; gap: 3px; }
.dates-col .sub { font-size: 11px; }

/* Drag-to-reorder affordances */
.card[draggable="true"] { cursor: grab; }
.card.dragging { opacity: 0.5; }
tbody tr[draggable="true"] { cursor: grab; }
tbody tr.dragging { opacity: 0.45; }
.column.drop-hint { outline: 1px dashed var(--accent); outline-offset: -3px; }

.asg-rows { display: flex; flex-direction: column; gap: 8px; }
.asg-row { display: flex; gap: 8px; align-items: center; }
.asg-row .asg-person { flex: 1; }
.asg-row .asg-pct { width: 80px; flex: 0 0 80px; }
.asg-total { margin-top: 8px; }

/* Buttons & forms */
.btn {
    background: var(--accent);
    color: #fff;
    border: none;
    padding: 8px 14px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
}
.btn:hover { filter: brightness(1.1); }
.btn-secondary { background: var(--panel-2); color: var(--text); border: 1px solid var(--border); }
.btn-danger { background: transparent; color: var(--red); border: 1px solid var(--red); }
.btn-sm { padding: 4px 10px; font-size: 13px; }
.icon-btn { background: none; border: none; color: var(--muted); cursor: pointer; font-size: 16px; }
.icon-btn:hover { color: var(--text); }

label { display: block; font-size: 13px; color: var(--muted); margin: 10px 0 4px; }
input, select, textarea {
    width: 100%;
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: 8px;
    padding: 8px 10px;
    font-size: 14px;
    font-family: inherit;
}
textarea { resize: vertical; min-height: 64px; }
.form-row { display: flex; gap: 12px; }
.form-row > div { flex: 1; }

/* Modal */
.modal-backdrop {
    position: fixed; inset: 0;
    background: rgba(0, 0, 0, 0.55);
    display: flex; align-items: center; justify-content: center;
    z-index: 50;
}
.modal {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 12px;
    width: 520px; max-width: 92vw;
    max-height: 88vh; overflow-y: auto;
    box-shadow: var(--shadow);
}
.modal-head { display: flex; align-items: center; justify-content: space-between; padding: 16px 18px; border-bottom: 1px solid var(--border); }
.modal-head h3 { margin: 0; }
.modal-body { padding: 18px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 20px; }

/* Toast */
.toast {
    position: fixed; bottom: 22px; left: 50%; transform: translateX(-50%);
    background: var(--panel-2); border: 1px solid var(--border);
    padding: 10px 18px; border-radius: 8px; box-shadow: var(--shadow); z-index: 60;
}
.toast.error { border-color: var(--red); color: var(--red); }

/* Signed-in user (topbar) */
.user-area { display: flex; align-items: center; gap: 10px; }
.user-chip { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text); }
.user-avatar { width: 26px; height: 26px; border-radius: 50%; object-fit: cover; border: 1px solid var(--border); }

/* Login page */
.login-body { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-card {
    background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
    box-shadow: var(--shadow); padding: 40px 44px; text-align: center; max-width: 360px; width: 90%;
}
.login-brand { font-size: 26px; font-weight: 700; }
.login-sub { color: var(--muted); margin: 6px 0 26px; }
.login-hint { color: var(--muted); font-size: 12px; margin-top: 16px; }
.btn-google {
    display: inline-flex; align-items: center; justify-content: center; gap: 10px;
    width: 100%; padding: 11px 16px; font-size: 15px; text-decoration: none;
    background: #fff; color: #202124; border-radius: 8px; font-weight: 600;
}
.btn-google:hover { background: #f1f3f4; }
.btn-google .g-mark {
    display: inline-flex; align-items: center; justify-content: center;
    width: 20px; height: 20px; border-radius: 50%; background: #4285f4; color: #fff;
    font-weight: 700; font-size: 13px;
}