:root{--teal:#00C4B0;--teal2:#009d8c;--bg:#0a1a19;--surface:#0f2421;--card:#162e2b;--border:#1e3d38;--text:#e8f5f3;--muted:#7ab3ad;--red:#EF4444;--yellow:#FBBF24;--blue:#3B82F6;--purple:#8B5CF6;--green:#10B981;--orange:#F97316}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Inter","SF Pro",system-ui,sans-serif;background:var(--bg);color:var(--text);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:var(--teal);text-decoration:none}
button{cursor:pointer;font-family:inherit}
input,textarea,select{font-family:inherit;font-size:14px}
/* Scrollbar */
::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#1e3d38;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#2a5450}

/* ── Login ───────────────────────────────────── */
.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg);background-image:radial-gradient(ellipse at 20% 20%,rgba(0,196,176,.12),transparent 50%),radial-gradient(ellipse at 80% 80%,rgba(0,196,176,.07),transparent 50%)}
.login-card{width:100%;max-width:400px;background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:40px;box-shadow:0 24px 60px rgba(0,0,0,.5)}
.login-logo{display:flex;align-items:center;gap:12px;margin-bottom:32px}
.login-logo img{width:44px;height:44px;filter:brightness(0) invert(1) sepia(1) saturate(2) hue-rotate(140deg)}
.login-logo span{font-size:22px;font-weight:800;letter-spacing:.08em;color:var(--teal)}
.login-card h1{font-size:24px;font-weight:700;margin-bottom:6px}
.login-card p{color:var(--muted);margin-bottom:28px;font-size:14px}
label{display:block;font-size:12px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;margin:16px 0 6px}
input[type=text],input[type=password],input[type=email],textarea,select{width:100%;padding:12px 14px;background:#0d2421;border:1px solid var(--border);border-radius:8px;color:var(--text);outline:none;transition:border-color .2s}
input:focus,textarea:focus,select:focus{border-color:var(--teal)}
.btn{display:inline-flex;align-items:center;gap:6px;padding:10px 18px;border-radius:8px;font-size:13px;font-weight:600;border:0;transition:all .15s}
.btn-primary{background:var(--teal);color:#001a18}.btn-primary:hover{background:var(--teal2)}
.btn-ghost{background:transparent;color:var(--muted);border:1px solid var(--border)}.btn-ghost:hover{border-color:var(--teal);color:var(--teal)}
.btn-danger{background:#7f1d1d;color:#fca5a5}.btn-danger:hover{background:#991b1b}
.btn-block{width:100%;justify-content:center;padding:13px}
.btn[disabled]{opacity:.5;cursor:wait}
.err-msg{color:var(--red);font-size:13px;margin-top:10px;min-height:16px}

/* ── App Shell ───────────────────────────────── */
.app{display:flex;flex-direction:column;height:100vh;overflow:hidden}
nav{display:flex;align-items:center;justify-content:space-between;padding:0 20px;height:52px;background:var(--surface);border-bottom:1px solid var(--border);flex-shrink:0;z-index:30}
.nav-left{display:flex;align-items:center;gap:14px}
.nav-logo{display:flex;align-items:center;gap:8px}
.nav-logo img{width:28px;height:28px;filter:brightness(0) invert(1) sepia(1) saturate(2) hue-rotate(140deg)}
.nav-logo span{font-size:15px;font-weight:800;letter-spacing:.08em;color:var(--teal)}
.nav-right{display:flex;align-items:center;gap:10px}
.nav-user{font-size:13px;color:var(--muted)}
.nav-user strong{color:var(--text)}
.avatar{width:30px;height:30px;border-radius:50%;background:var(--teal);color:#001a18;font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center}

/* ── Board Tabs ──────────────────────────────── */
.board-tabs{display:flex;gap:4px;padding:10px 16px 0;background:var(--surface);border-bottom:1px solid var(--border);flex-shrink:0;overflow-x:auto}
.board-tab{padding:8px 16px;border-radius:8px 8px 0 0;font-size:13px;font-weight:600;color:var(--muted);background:transparent;border:0;cursor:pointer;white-space:nowrap;transition:all .15s;border-bottom:2px solid transparent}
.board-tab:hover{color:var(--text);background:rgba(255,255,255,.04)}
.board-tab.active{color:var(--teal);border-bottom-color:var(--teal);background:rgba(0,196,176,.07)}
.board-tab .tab-icon{margin-right:6px}

/* ── Kanban ──────────────────────────────────── */
.kanban-wrap{flex:1;overflow-x:auto;overflow-y:hidden;padding:16px}
.kanban{display:flex;gap:12px;align-items:flex-start;height:100%;min-width:max-content}
.column{width:272px;flex-shrink:0;background:var(--surface);border:1px solid var(--border);border-radius:12px;display:flex;flex-direction:column;max-height:100%}
.col-header{padding:12px 14px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border)}
.col-title{font-weight:700;font-size:13px;display:flex;align-items:center;gap:8px}
.col-count{font-size:12px;color:var(--muted);background:rgba(255,255,255,.06);padding:1px 7px;border-radius:20px}
.col-actions{display:flex;gap:4px}
.icon-btn{background:none;border:0;color:var(--muted);padding:4px;border-radius:6px;font-size:14px;display:flex;align-items:center;transition:all .12s}
.icon-btn:hover{background:rgba(255,255,255,.08);color:var(--text)}
.cards-area{padding:8px;overflow-y:auto;flex:1;min-height:60px;display:flex;flex-direction:column;gap:6px}
.cards-area.drag-over{background:rgba(0,196,176,.06);border-radius:8px}

/* ── Card ────────────────────────────────────── */
.card{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:10px 12px;cursor:pointer;transition:all .15s;user-select:none}
.card:hover{border-color:rgba(0,196,176,.4);transform:translateY(-1px);box-shadow:0 4px 16px rgba(0,0,0,.3)}
.card.dragging{opacity:.4;transform:rotate(1.5deg)}
.card.drag-placeholder{background:rgba(0,196,176,.08);border:2px dashed rgba(0,196,176,.3);min-height:60px}
.card-labels{display:flex;gap:4px;flex-wrap:wrap;margin-bottom:6px}
.label-chip{padding:1px 7px;border-radius:20px;font-size:11px;font-weight:600;opacity:.9}
.card-title{font-size:13px;font-weight:500;line-height:1.4;margin-bottom:6px}
.card-meta{display:flex;align-items:center;gap:8px;margin-top:6px}
.card-avatars{display:flex;gap:-4px}
.card-avatar{width:22px;height:22px;border-radius:50%;background:var(--teal);color:#001a18;font-size:9px;font-weight:700;display:flex;align-items:center;justify-content:center;border:2px solid var(--card);margin-left:-4px}
.card-avatar:first-child{margin-left:0}
.checklist-bar{flex:1;display:flex;align-items:center;gap:6px;font-size:11px;color:var(--muted)}
.checklist-prog{flex:1;height:3px;background:var(--border);border-radius:2px;overflow:hidden}
.checklist-fill{height:100%;background:var(--teal);border-radius:2px;transition:width .3s}
.add-card-btn{margin:6px 8px 8px;padding:7px 10px;background:transparent;border:1px dashed var(--border);border-radius:8px;color:var(--muted);font-size:13px;text-align:left;transition:all .15s;width:calc(100% - 16px)}
.add-card-btn:hover{border-color:var(--teal);color:var(--teal);background:rgba(0,196,176,.05)}
.add-col-btn{width:240px;flex-shrink:0;background:rgba(255,255,255,.04);border:1px dashed var(--border);border-radius:12px;padding:12px;color:var(--muted);font-size:13px;font-weight:500;cursor:pointer;transition:all .15s;align-self:flex-start;min-height:52px}
.add-col-btn:hover{border-color:var(--teal);color:var(--teal)}

/* ── Modal ───────────────────────────────────── */
.modal-bg{position:fixed;inset:0;background:rgba(0,0,0,.65);display:flex;align-items:center;justify-content:center;z-index:100;padding:20px;opacity:0;transition:opacity .15s;pointer-events:none}
.modal-bg.open{opacity:1;pointer-events:all}
.modal{background:var(--surface);border:1px solid var(--border);border-radius:16px;width:100%;max-width:580px;max-height:90vh;overflow-y:auto;box-shadow:0 40px 80px rgba(0,0,0,.6);transform:translateY(12px);transition:transform .15s}
.modal-bg.open .modal{transform:translateY(0)}
.modal-head{padding:20px 24px 0;display:flex;justify-content:space-between;align-items:flex-start}
.modal-head h2{font-size:18px;font-weight:700}
.modal-close{background:none;border:0;color:var(--muted);font-size:20px;padding:4px;border-radius:6px;cursor:pointer;line-height:1}
.modal-close:hover{color:var(--text);background:rgba(255,255,255,.08)}
.modal-body{padding:20px 24px 24px}
.modal-section{margin-top:20px}
.modal-section h3{font-size:12px;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.1em;margin-bottom:10px}
.card-title-input{width:100%;background:transparent;border:0;font-size:18px;font-weight:700;color:var(--text);outline:none;padding:0;line-height:1.3}
.card-desc{width:100%;background:#0d2421;border:1px solid var(--border);border-radius:8px;color:var(--text);padding:10px 12px;min-height:80px;resize:vertical;font-size:13px;outline:none}
.card-desc:focus{border-color:var(--teal)}

/* Labels picker */
.labels-grid{display:flex;flex-wrap:wrap;gap:6px}
.label-pick{padding:4px 12px;border-radius:20px;font-size:12px;font-weight:600;cursor:pointer;border:2px solid transparent;transition:all .12s;opacity:.6}
.label-pick:hover{opacity:.9}
.label-pick.selected{opacity:1;border-color:#fff}

/* Members picker */
.members-list{display:flex;flex-wrap:wrap;gap:6px}
.member-pick{display:flex;align-items:center;gap:6px;padding:5px 12px 5px 6px;border-radius:20px;background:var(--card);border:1px solid var(--border);cursor:pointer;font-size:12px;transition:all .12s}
.member-pick:hover{border-color:var(--teal)}
.member-pick.selected{border-color:var(--teal);background:rgba(0,196,176,.1)}
.member-pick .avatar{width:22px;height:22px;font-size:9px}

/* Checklist */
.checklist-box{background:var(--card);border:1px solid var(--border);border-radius:8px;overflow:hidden;margin-bottom:8px}
.checklist-name{padding:8px 12px;font-weight:600;font-size:13px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center}
.check-item{display:flex;align-items:flex-start;gap:10px;padding:6px 12px}
.check-item:hover{background:rgba(255,255,255,.03)}
.check-item input[type=checkbox]{margin-top:2px;accent-color:var(--teal);width:14px;height:14px;flex-shrink:0}
.check-item label{flex:1;cursor:pointer;font-size:13px;line-height:1.4}
.check-item.done label{text-decoration:line-through;color:var(--muted)}
.check-item .del-item{opacity:0;font-size:11px;padding:2px 6px}
.check-item:hover .del-item{opacity:1}
.add-check-row{padding:6px 12px;display:flex;gap:6px}
.add-check-row input{flex:1;padding:5px 8px}

/* ── Quick card form ──────────────────────────── */
.quick-add{padding:6px 8px 8px}
.quick-add textarea{width:100%;padding:8px 10px;background:#0d2421;border:1px solid var(--teal);border-radius:8px;color:var(--text);min-height:64px;resize:none;font-size:13px;outline:none}
.quick-add-actions{display:flex;gap:6px;margin-top:6px}

/* ── Admin ───────────────────────────────────── */
.admin-page{padding:30px;max-width:800px;margin:0 auto}
.admin-page h1{font-size:22px;font-weight:800;margin-bottom:6px}
.admin-page .sub{color:var(--muted);margin-bottom:28px}
.user-table{width:100%;border-collapse:collapse}
.user-table th{text-align:left;padding:10px 14px;font-size:12px;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;border-bottom:1px solid var(--border)}
.user-table td{padding:12px 14px;border-bottom:1px solid var(--border);font-size:13px;vertical-align:middle}
.user-table tr:last-child td{border-bottom:0}
.badge{display:inline-flex;padding:2px 9px;border-radius:20px;font-size:11px;font-weight:700;text-transform:uppercase}
.badge-admin{background:rgba(0,196,176,.15);color:var(--teal)}
.badge-manager{background:rgba(139,92,246,.15);color:#a78bfa}
.badge-member{background:rgba(255,255,255,.07);color:var(--muted)}
.section-header{display:flex;justify-content:space-between;align-items:center;margin:28px 0 16px}
.section-header h2{font-size:16px;font-weight:700}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.form-full{grid-column:1/-1}
.add-user-box{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:20px}

/* ── Toast ───────────────────────────────────── */
.toast{position:fixed;bottom:24px;right:24px;background:#0f2421;border:1px solid var(--teal);border-radius:10px;padding:12px 18px;font-size:13px;font-weight:500;box-shadow:0 8px 24px rgba(0,0,0,.4);transform:translateY(20px);opacity:0;transition:all .25s;z-index:999;pointer-events:none}
.toast.show{transform:translateY(0);opacity:1}
.toast.err{border-color:var(--red)}

.due-chip{display:inline-block;font-size:11px;font-weight:600;color:var(--yellow);margin:2px 0 6px}
input[type=date]{background:#0d2421;color:var(--text);border:1px solid var(--border);border-radius:8px;padding:8px 10px;font-family:inherit}
/* Responsive */
@media(max-width:600px){
.kanban-wrap{padding:10px}
.column{width:240px}
.nav-user{display:none}
.form-grid{grid-template-columns:1fr}
.admin-page{padding:16px}
}