:root {
    --bg: #f5f6fa;
    --surface: #ffffff;
    --border: #e2e5ec;
    --text: #1f2330;
    --muted: #6b7280;
    --primary: #3b5bdb;
    --primary-2: #2a44b0;
    --accent: #f59f00;
    --danger: #e03131;
    --ok: #2f9e44;
}

* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
}

header.topbar {
    display: flex; align-items: center; gap: .5rem; flex-wrap: wrap;
    padding: .6rem 1rem;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    position: sticky; top: 0; z-index: 10;
}
header.topbar h1 { margin: 0; font-size: 1.05rem; white-space: nowrap; }
header.topbar .spacer { flex: 1; }
.topbar-select {
    padding: .5rem .6rem; border: 1px solid var(--border); border-radius: 8px;
    background: #fff; max-width: 220px; font: inherit; color: var(--text);
    transition: border-color .15s, box-shadow .15s;
}
.topbar-select:hover { border-color: #c2c8d4; }
.topbar-select:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(59,91,219,.15); }

/* Searchable combobox */
.combo { position: relative; min-width: 200px; min-height: 38px; }
.combo-btn {
    display: inline-flex; align-items: center; gap: .5rem; width: 100%;
    padding: .5rem .6rem; border: 1px solid var(--border); border-radius: 8px;
    background: #fff; color: var(--text); font: inherit; cursor: pointer;
    transition: border-color .15s, box-shadow .15s;
}
.combo-btn:hover { border-color: #c2c8d4; }
.combo.open .combo-btn,
.combo-btn:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(59,91,219,.15); }
.combo-label { flex: 1; text-align: left; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.combo-label.muted { color: var(--muted); }
.combo-clear {
    display: inline-flex; align-items: center; justify-content: center;
    width: 18px; height: 18px; border-radius: 50%;
    color: var(--muted); font-size: .95rem; line-height: 1; cursor: pointer;
    user-select: none;
}
.combo-clear[hidden] { display: none; }
.combo-clear:hover { background: #ffe3e3; color: var(--danger); }
.combo-caret { color: var(--muted); font-size: .8rem; transition: transform .15s; }
.combo.open .combo-caret { transform: rotate(180deg); }

.combo-pop {
    position: absolute; top: calc(100% + 4px); left: 0; right: 0; min-width: 240px;
    background: #fff; border: 1px solid var(--border); border-radius: 8px;
    box-shadow: 0 12px 32px rgba(15,23,42,.15);
    z-index: 50; padding: .35rem; max-height: 320px; display: flex; flex-direction: column;
}
.combo-pop[hidden] { display: none; }
.combo-search {
    width: 100%; padding: .45rem .55rem; border: 1px solid var(--border);
    border-radius: 6px; font: inherit; margin-bottom: .35rem;
}
.combo-search:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(59,91,219,.15); }
.combo-list { list-style: none; padding: 0; margin: 0; overflow-y: auto; }
.combo-item {
    padding: .45rem .55rem; border-radius: 6px; cursor: pointer; font-size: .9rem;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.combo-item:hover { background: #eef2ff; }
.combo-item.active { background: var(--primary); color: #fff; }
.combo-empty { padding: .55rem; color: var(--muted); font-size: .85rem; text-align: center; }

.main { padding: 1rem 1.25rem; overflow-x: auto; }

.btn {
    display: inline-flex; align-items: center; gap: .35rem;
    padding: .5rem .85rem; border-radius: 6px; border: 1px solid var(--border);
    background: #fff; cursor: pointer; font-size: .9rem; color: var(--text);
}
.btn:hover { background: #f1f3f7; }
.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-2); }
.btn-danger { color: var(--danger); border-color: #f4c2c2; }
.btn-sm { padding: .25rem .5rem; font-size: .8rem; }

.board { display: grid; grid-template-columns: repeat(5, minmax(240px, 1fr)); gap: .75rem; }
.column {
    background: #eef0f5; border-radius: 8px; padding: .5rem;
    display: flex; flex-direction: column; min-height: 200px;
}
.column h3 {
    margin: .25rem .25rem .5rem; font-size: .85rem;
    color: var(--muted); text-transform: uppercase; letter-spacing: .04em;
    display: flex; justify-content: space-between; align-items: center;
}
.column .count { background: #fff; border-radius: 999px; padding: 0 .5rem; font-size: .75rem; }

.card {
    background: #fff; border: 1px solid var(--border); border-radius: 6px;
    padding: .55rem .65rem; margin-bottom: .5rem; cursor: grab; font-size: .88rem;
    box-shadow: 0 1px 1px rgba(0,0,0,.03);
}
.card:active { cursor: grabbing; }
.card .num { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; color: var(--muted); font-size: .72rem; }
.card .title { margin: .15rem 0; font-weight: 500; }
.card .meta { display: flex; gap: .5rem; font-size: .72rem; color: var(--muted); flex-wrap: wrap; }
.card.prio-high { border-left: 3px solid var(--accent); }
.card.prio-urgent { border-left: 3px solid var(--danger); }
.card .pill { padding: .05rem .4rem; border-radius: 999px; background: #eef0f5; }
.card .pill.due-soon { background: #fff3bf; }
.card .pill.due-over { background: #ffe3e3; color: var(--danger); }
.column.drop-hover { outline: 2px dashed var(--primary); outline-offset: -4px; }

/* Modal */
.modal-bg { position: fixed; inset: 0; background: rgba(15,23,42,.55); display: none; align-items: center; justify-content: center; z-index: 100; }
.modal-bg.show { display: flex; }
.modal {
    background: #fff; border-radius: 8px; width: min(720px, 95vw); max-height: 92vh; overflow-y: auto;
    box-shadow: 0 20px 50px rgba(0,0,0,.25);
}
.modal header { padding: .85rem 1rem; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: .5rem; }
.modal header .num { font-family: ui-monospace, monospace; color: var(--muted); }
.modal header h2 { margin: 0; font-size: 1.05rem; flex: 1; }
.modal .body { padding: 1rem; display: grid; gap: .75rem; }
.modal .body label { font-size: .8rem; color: var(--muted); display: block; margin-bottom: .2rem; }
.modal .body input[type=text], .modal .body input[type=date], .modal .body input[type=number],
.modal .body select, .modal .body textarea {
    width: 100%; padding: .5rem; border: 1px solid var(--border); border-radius: 6px; font: inherit;
}
.modal .body textarea { min-height: 100px; resize: vertical; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; }
.row3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: .75rem; }

.dropzone {
    border: 2px dashed #c2c8d4; border-radius: 8px; padding: 1rem;
    text-align: center; color: var(--muted); background: #fafbfd; transition: all .15s;
}
.dropzone.over { border-color: var(--primary); background: #eef2ff; color: var(--primary); }
.attachment-list { list-style: none; padding: 0; margin: .5rem 0 0; display: grid; gap: .35rem; }
.attachment-list li {
    display: flex; align-items: center; gap: .5rem;
    padding: .35rem .5rem; border: 1px solid var(--border); border-radius: 6px; background: #fff;
}
.attachment-list .icon { font-size: 1.1rem; }
.attachment-list .name { flex: 1; font-size: .85rem; word-break: break-all; }
.attachment-list .size { font-size: .72rem; color: var(--muted); }

.comments { display: grid; gap: .4rem; }
.comment { background: #f6f7fb; border-radius: 6px; padding: .5rem .65rem; font-size: .88rem; }
.comment .meta { font-size: .72rem; color: var(--muted); margin-bottom: .15rem; }

.toast {
    position: fixed; bottom: 1rem; right: 1rem; background: #1f2330; color: #fff;
    padding: .6rem .9rem; border-radius: 6px; opacity: 0; transition: opacity .25s; z-index: 200;
}
.toast.show { opacity: 1; }

.empty { color: var(--muted); padding: 2rem; text-align: center; }
.global-drop { position: fixed; inset: 0; background: rgba(59,91,219,.1); border: 4px dashed var(--primary); display: none; z-index: 90; pointer-events: none; }
.global-drop.show { display: block; }
.global-drop .hint {
    position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%);
    background: var(--primary); color: #fff; padding: .75rem 1.25rem; border-radius: 8px; font-weight: 500;
}