:root{
  --radius:12px; --radius-sm:8px; --shadow:0 1px 3px rgba(40,30,25,.10),0 6px 16px rgba(40,30,25,.06);
  --shadow-lg:0 12px 40px rgba(40,30,25,.18); --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
/* ---- palettes ---- */
html[data-theme="coral"]{   --prim:#FF6B5B; --prim-d:#E8523F; --acc:#14B8A6; --bg:#FFF9F5; --surface:#FFFFFF; --col-bg:#F4EDE7; --ink:#3A2F2A; --muted:#8C7C72; --line:#F0E4DC; }
html[data-theme="blueberry"]{--prim:#6366F1;--prim-d:#4F46E5; --acc:#22D3EE; --bg:#F6F7FF; --surface:#FFFFFF; --col-bg:#ECEDF8; --ink:#2A2C4A; --muted:#7B7E9C; --line:#E3E5F4; }
/* Mono: black / white / light-grey, sharp 3px corners, crisp borders */
html[data-theme="mono"]{ --prim:#1A1A1A; --prim-d:#000000; --acc:#3F3F3F; --bg:#FFFFFF; --surface:#FFFFFF; --col-bg:#FFFFFF; --ink:#141414; --muted:#6B6B6B; --line:#D6D6DA; --radius:3px; --radius-sm:3px; --shadow:0 1px 2px rgba(0,0,0,.06); --shadow-lg:0 10px 30px rgba(0,0,0,.22); }
/* in an (almost) monochrome theme, surfaces need explicit borders to separate */
html[data-theme="mono"] .card{ border-color:var(--line); }
html[data-theme="mono"] .column{ border:1px solid var(--line); }
html[data-theme="mono"] .modal,
html[data-theme="mono"] .auth-card,
html[data-theme="mono"] .menu-pop,
html[data-theme="mono"] .toast{ border:1px solid var(--line); border-radius:3px; }
html[data-theme="mono"] .avatar{ border:1px solid #000; }
html[data-theme="mono"] .search{ border-radius:3px; }

*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{font-family:var(--font);background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased}
button{font-family:inherit;cursor:pointer}
a{color:var(--prim-d)}
.app-loading{display:flex;align-items:center;justify-content:center;height:100vh;color:var(--muted)}

/* buttons */
.btn{border:0;background:var(--prim);color:#fff;font-weight:700;padding:9px 14px;border-radius:var(--radius-sm);font-size:14px}
.btn:hover{background:var(--prim-d)}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.btn.ghost:hover{background:var(--col-bg)}
.btn.sm{padding:6px 10px;font-size:13px}
.btn.danger{background:#EF4444}

/* layout shell */
.shell{display:flex;height:100vh;overflow:hidden}
.rail{width:60px;background:var(--surface);border-right:1px solid var(--line);display:flex;flex-direction:column;align-items:center;gap:8px;padding:12px 0;transition:width .15s ease}
.rail.expanded{width:230px;align-items:stretch;padding:12px}
.rail .brand{font-weight:800;color:#000;text-align:center;margin-bottom:8px;font-size:18px}
.rail.expanded .brand{text-align:left;padding-left:6px}
.navbtn{display:flex;align-items:center;gap:10px;width:40px;height:40px;justify-content:center;border-radius:10px;background:transparent;border:0;color:var(--ink);font-size:18px}
.rail.expanded .navbtn{width:auto;justify-content:flex-start;padding:8px 10px;font-size:14px;font-weight:600}
.navbtn:hover{background:var(--col-bg)}
/* nav icons: single-colour in the theme's darkest tone (--ink), kept dark even when active */
.navbtn{color:var(--ink)}
.navbtn svg{width:26px;height:26px;display:block;stroke-width:2}
.rail.expanded .navbtn svg{width:22px;height:22px}
.navbtn.active{background:color-mix(in srgb,var(--prim) 16%,transparent);color:var(--ink)}
.navbtn .lbl{display:none}
.rail.expanded .navbtn .lbl{display:inline}
.rail .spacer{margin-top:auto}
.board-links{display:none;flex-direction:column;gap:2px;margin:6px 0;overflow:auto}
.rail.expanded .board-links{display:flex}
.board-link{text-align:left;padding:7px 10px;border-radius:8px;background:transparent;border:0;color:var(--ink);font-size:13px}
.board-link:hover{background:var(--col-bg)}
.board-link.active{background:var(--col-bg);font-weight:700}

.main{flex:1;display:flex;flex-direction:column;min-width:0}
.topbar{height:56px;display:flex;align-items:center;gap:12px;padding:0 16px;border-bottom:1px solid var(--line);background:var(--surface)}
.topbar h1{font-size:17px;margin:0;font-weight:800}
.topbar .grow{flex:1}
.search{border:1px solid var(--line);border-radius:8px;padding:7px 10px;font-size:13px;background:var(--bg);min-width:180px}
.avatar{width:34px;height:34px;border-radius:50%;background:var(--prim);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;border:0}
.menu{position:relative}
.menu-pop{position:absolute;right:0;top:42px;background:var(--surface);border:1px solid var(--line);border-radius:10px;box-shadow:var(--shadow-lg);padding:8px;min-width:200px;z-index:40}
.menu-pop .row{padding:8px 10px;border-radius:8px;font-size:14px}
.menu-pop .row:hover{background:var(--col-bg);cursor:pointer}
.swatch{width:16px;height:16px;border-radius:5px;display:inline-block;margin-right:8px;vertical-align:-2px}

/* theme picker — flyout anchored to the rail's theme button */
.theme-flyout{position:fixed;background:var(--surface);border:1px solid var(--line);border-radius:10px;box-shadow:var(--shadow-lg);padding:6px;min-width:184px;z-index:60;display:flex;flex-direction:column;gap:2px}
.theme-flyout .head{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.4px;padding:4px 10px 6px}
.theme-flyout .theme-link{width:100%}
.theme-flyout .theme-link .lbl{display:inline}
.theme-link{display:flex;align-items:center;gap:8px;border:0;background:transparent;border-radius:8px;padding:7px 10px;color:var(--ink);font-size:13px;text-align:left}
.theme-link:hover{background:var(--col-bg)}
.theme-link.active{background:var(--col-bg);font-weight:700}
.theme-link .swatch{width:14px;height:14px;border:1px solid rgba(0,0,0,.08)}
html[data-theme="mono"] .theme-flyout{border-radius:3px}

/* version label at the very bottom of the rail */
.rail-version{font-size:11px;color:var(--muted);text-align:center;padding:8px 4px 2px;letter-spacing:.3px}
.rail.expanded .rail-version{text-align:left;padding-left:10px}

/* topbar avatar image + icon button */
.avatar{overflow:hidden;padding:0}
.avatar img{width:100%;height:100%;object-fit:cover;display:block}
.iconbtn{border:0;background:transparent;color:var(--muted);width:32px;height:32px;border-radius:8px;display:inline-flex;align-items:center;justify-content:center;margin-left:6px}
.iconbtn:hover{background:var(--col-bg);color:var(--ink)}
.iconbtn svg{width:18px;height:18px}
.del-icon:hover{background:transparent;color:#EF4444}

/* profile */
.profile-avatar{width:84px;height:84px;border-radius:50%;overflow:hidden;background:var(--prim);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:30px;flex:0 0 auto;border:1px solid var(--line)}
.profile-avatar img{width:100%;height:100%;object-fit:cover}
.pf-label{display:block;font-size:12px;color:var(--muted);margin:12px 0 4px;text-transform:uppercase;letter-spacing:.4px}

/* mono uses white surfaces, so hovers need an explicit light-grey */
html[data-theme="mono"] .navbtn:hover,
html[data-theme="mono"] .board-link:hover,
html[data-theme="mono"] .theme-link:hover,
html[data-theme="mono"] .menu-pop .row:hover,
html[data-theme="mono"] .add-card:hover,
html[data-theme="mono"] .iconbtn:hover{background:#F1F1F2}
html[data-theme="mono"] .theme-link.active,
html[data-theme="mono"] .board-link.active{background:#EDEDEF}

/* board */
.board{flex:1;display:flex;gap:14px;padding:16px;overflow-x:auto;overflow-y:hidden;align-items:flex-start}
.column{background:var(--col-bg);border-radius:var(--radius);width:288px;flex:0 0 auto;display:flex;flex-direction:column;max-height:100%}
.column-head{display:flex;align-items:center;gap:6px;padding:10px 12px}
.col-drag{cursor:grab;color:var(--muted);display:flex;align-items:center;flex:0 0 auto;opacity:.6}
.col-drag:hover{opacity:1}
.col-drag:active{cursor:grabbing}
.col-drag svg{width:16px;height:16px;display:block}
.column-head .title{font-weight:700;font-size:14px;flex:1;border:0;background:transparent;color:var(--ink)}
.column-head .count{color:var(--muted);font-size:12px}
.cards{display:flex;flex-direction:column;gap:8px;padding:0 10px 10px;overflow-y:auto;min-height:8px}
.card{background:var(--surface);border-radius:var(--radius-sm);box-shadow:var(--shadow);padding:10px;cursor:pointer;border:1px solid transparent}
.card:hover{border-color:var(--line)}
.card .labels{display:flex;gap:4px;flex-wrap:wrap;margin-bottom:6px}
.card .label{height:7px;width:30px;border-radius:4px}
.card .ctitle{font-size:14px;font-weight:600;line-height:1.3}
.card .meta{display:flex;align-items:center;gap:8px;margin-top:8px;color:var(--muted);font-size:12px;flex-wrap:wrap}
.badge{display:inline-flex;align-items:center;gap:4px;background:var(--col-bg);border-radius:6px;padding:2px 6px}
.prio{width:8px;height:8px;border-radius:50%}
.prio.low{background:#9CA3AF}.prio.medium{background:#F59E0B}.prio.high{background:#EF4444}
.assignee{width:32px;height:32px;border-radius:50%;background:var(--acc);color:#fff;font-size:13px;display:flex;align-items:center;justify-content:center;font-weight:700}
.assignee.inactive{background:#9CA3AF;opacity:.5;filter:grayscale(1)}
.assignee.photo{background:none;border:2px solid var(--acc);padding:0;overflow:hidden}
.assignee.photo img{width:100%;height:100%;object-fit:cover;border-radius:50%}
.add-card{margin:0 10px 10px;border:0;background:transparent;color:var(--muted);text-align:left;padding:8px;border-radius:8px;font-size:13px}
.add-card:hover{background:var(--surface);color:var(--ink)}
.add-column{width:280px;flex:0 0 auto}
.sortable-ghost{opacity:.4}
.sortable-chosen{box-shadow:var(--shadow-lg)}

/* empty state */
.empty{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;height:100%;color:var(--muted);text-align:center;padding:40px}
.empty .big{font-size:40px}

/* modal */
.overlay{position:fixed;inset:0;background:rgba(30,20,15,.45);display:flex;align-items:flex-start;justify-content:center;padding:40px 16px;z-index:50;overflow:auto}
.modal{background:var(--bg);border-radius:16px;width:min(720px,100%);box-shadow:var(--shadow-lg);overflow:hidden}
.modal-head{display:flex;gap:10px;padding:16px 18px;border-bottom:1px solid var(--line);background:var(--surface)}
.modal-head .ctitle-input{flex:1;font-size:18px;font-weight:700;border:1px solid transparent;border-radius:8px;padding:6px 8px;background:transparent;color:var(--ink)}
.modal-head .ctitle-input:focus{border-color:var(--line);background:var(--bg);outline:none}
.modal-body{padding:18px;display:grid;grid-template-columns:1fr 220px;gap:20px}
.modal-body h4{margin:0 0 8px;font-size:13px;text-transform:uppercase;letter-spacing:.4px;color:var(--muted)}
.section{margin-bottom:20px}
.md-editor textarea{width:100%;min-height:90px;border:1px solid var(--line);border-radius:8px;padding:10px;font-family:inherit;font-size:14px;background:var(--surface);color:var(--ink)}
.md-preview{font-size:14px;line-height:1.5}
.md-preview pre{background:var(--col-bg);padding:10px;border-radius:8px;overflow:auto}
.md-preview code{background:var(--col-bg);padding:1px 5px;border-radius:4px}
.checklist .item{display:flex;align-items:center;gap:8px;padding:4px 0;font-size:14px}
.progress{height:6px;background:var(--col-bg);border-radius:4px;overflow:hidden;margin:6px 0}
.progress>i{display:block;height:100%;background:var(--acc)}
.comment{padding:8px 0;border-top:1px solid var(--line);font-size:14px}
.comment .who{font-size:12px;color:var(--muted);margin-bottom:2px}
.attachments{display:flex;flex-wrap:wrap;gap:10px}
.attach{width:96px}
.attach img{width:96px;height:72px;object-fit:cover;border-radius:8px;border:1px solid var(--line)}
.attach .fname{font-size:11px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.dropzone{border:2px dashed var(--line);border-radius:10px;padding:14px;text-align:center;color:var(--muted);font-size:13px}
.dropzone.drag{border-color:var(--prim);color:var(--prim-d);background:color-mix(in srgb,var(--prim) 8%,transparent)}
.side label{display:block;font-size:12px;color:var(--muted);margin:12px 0 4px;text-transform:uppercase;letter-spacing:.4px}
.side select,.side input{width:100%;padding:8px;border:1px solid var(--line);border-radius:8px;background:var(--surface);color:var(--ink);font-size:14px}
.chip{display:inline-flex;align-items:center;gap:6px;background:var(--col-bg);border-radius:14px;padding:3px 10px;font-size:13px;margin:3px 3px 0 0;cursor:pointer}
.chip.on{background:var(--prim);color:#fff}
.chip.inactive{opacity:.55;filter:grayscale(1);text-decoration:line-through;cursor:default}
.chip.inactive.on{cursor:pointer}
.chip-av{width:26px;height:26px;border-radius:50%;object-fit:cover;border:2px solid var(--acc);flex:0 0 auto}

/* user-management avatar */
.u-av{width:32px;height:32px;border-radius:50%;background:var(--acc);color:#fff;font-size:13px;display:inline-flex;align-items:center;justify-content:center;font-weight:700;overflow:hidden;flex:0 0 auto;border:2px solid var(--acc)}
.u-av img{width:100%;height:100%;object-fit:cover;display:block}
.u-av.initial{background:var(--acc);border-color:var(--acc)}
.chip-initial{display:inline-flex;align-items:center;justify-content:center;background:var(--acc);color:#fff;font-size:10px;font-weight:700;border:0}

/* login */
.auth{display:flex;align-items:center;justify-content:center;height:100vh;padding:16px}
.auth-card{background:var(--surface);border-radius:16px;box-shadow:var(--shadow-lg);padding:28px;width:min(380px,100%)}
.auth-card h1{color:var(--prim);font-size:24px;margin:0 0 4px}
.auth-card p.sub{color:var(--muted);margin:0 0 18px;font-size:14px}
.field{margin-bottom:12px}
.field label{display:block;font-size:13px;margin-bottom:4px;color:var(--muted)}
.field input{width:100%;padding:10px;border:1px solid var(--line);border-radius:8px;font-size:15px;background:var(--bg);color:var(--ink)}
.auth-card .btn{width:100%;margin-top:6px}
.auth-card .link{background:0;border:0;color:var(--prim-d);font-size:13px;margin-top:12px;padding:0}
.checkrow{display:flex;align-items:center;gap:8px;font-size:14px;margin:6px 0}

/* toasts */
.toasts{position:fixed;bottom:18px;right:18px;display:flex;flex-direction:column;gap:8px;z-index:100}
.toast{background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--prim);border-radius:10px;padding:12px 14px;box-shadow:var(--shadow-lg);font-size:14px;max-width:320px;animation:slideIn .18s ease}
.toast.error{border-left-color:#EF4444}
.toast.success{border-left-color:#22C55E}
@keyframes slideIn{from{transform:translateY(8px);opacity:0}to{transform:none;opacity:1}}

/* table (admin) */
table.tbl{width:100%;border-collapse:collapse;font-size:14px}
.tbl th,.tbl td{text-align:left;padding:10px;border-bottom:1px solid var(--line)}
.tbl th{color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase}

@media(max-width:640px){
  .modal-body{grid-template-columns:1fr}
  .rail{width:52px}
  .search{display:none}
}