*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#f1f5f9;--surface:#fff;--text:#1e293b;--text-muted:#64748b;
  --primary:#6366f1;--primary-hover:#4f46e5;--primary-light:#e0e7ff;
  --danger:#ef4444;--success:#10b981;--warning:#f59e0b;
  --border:#e2e8f0;--shadow:0 1px 3px rgba(0,0,0,.1);
  --radius:8px;--sidebar-w:250px;
}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}
a{color:var(--primary);text-decoration:none}
.hidden{display:none!important}

/* Login */
.login-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#6366f1 0%,#8b5cf6 100%)}
.login-card{background:var(--surface);padding:2.5rem;border-radius:16px;box-shadow:0 20px 60px rgba(0,0,0,.2);width:100%;max-width:400px}
.login-logo{text-align:center;margin-bottom:2rem}
.logo-icon{display:inline-flex;align-items:center;justify-content:center;width:64px;height:64px;background:var(--primary);color:#fff;font-size:2rem;font-weight:700;border-radius:16px;margin-bottom:.5rem}
.login-logo h1{font-size:1.5rem;color:var(--text)}
.login-logo p{color:var(--text-muted);font-size:.9rem}
.login-hint{text-align:center;color:var(--text-muted);font-size:.8rem;margin-top:1rem}

/* Forms */
.form-group{margin-bottom:1rem}
.form-group label{display:block;font-size:.85rem;font-weight:600;margin-bottom:.3rem;color:var(--text)}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:.6rem .8rem;border:1px solid var(--border);border-radius:var(--radius);font-size:.9rem;transition:border-color .2s}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}
.form-group textarea{resize:vertical;min-height:80px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:.4rem;padding:.55rem 1.1rem;border:none;border-radius:var(--radius);font-size:.85rem;font-weight:600;cursor:pointer;transition:all .2s}
.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover)}
.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover{background:#dc2626}
.btn-success{background:var(--success);color:#fff}
.btn-ghost{background:transparent;color:var(--text-muted);border:1px solid var(--border)}.btn-ghost:hover{background:var(--bg)}
.btn-sm{padding:.35rem .7rem;font-size:.8rem}
.btn-full{width:100%;justify-content:center;padding:.75rem}

/* Layout */
.main-app{display:flex;min-height:100vh}
.sidebar{width:var(--sidebar-w);background:var(--text);color:#fff;display:flex;flex-direction:column;position:fixed;height:100vh;z-index:100;transition:transform .3s}
.sidebar-header{padding:1.2rem;display:flex;align-items:center;gap:.7rem;border-bottom:1px solid rgba(255,255,255,.1)}
.logo-icon-sm{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;background:var(--primary);color:#fff;font-size:1.1rem;font-weight:700;border-radius:10px}
.sidebar-title{font-size:1.1rem;font-weight:700}
.nav-links{list-style:none;flex:1;padding:.5rem 0}
.nav-link{display:flex;align-items:center;gap:.6rem;padding:.7rem 1.2rem;color:rgba(255,255,255,.7);font-size:.9rem;transition:all .2s}
.nav-link:hover,.nav-link.active{color:#fff;background:rgba(255,255,255,.1)}
.nav-link.active{border-right:3px solid var(--primary)}
.nav-icon{font-size:1.1rem;width:24px;text-align:center}
.sidebar-footer{padding:1rem;border-top:1px solid rgba(255,255,255,.1)}
.user-info{font-size:.85rem;margin-bottom:.5rem;color:rgba(255,255,255,.8)}

.content{flex:1;margin-left:var(--sidebar-w)}
.topbar{display:flex;align-items:center;gap:1rem;padding:1rem 1.5rem;background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:50}
.topbar h2{font-size:1.2rem;flex:1}
.topbar-right{display:flex;gap:.5rem}
.menu-toggle{display:none;background:none;border:none;font-size:1.5rem;cursor:pointer}
.page-content{padding:1.5rem}

/* Cards */
.card{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--border);overflow:hidden}
.card-header{padding:1rem 1.2rem;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}
.card-header h3{font-size:1rem}
.card-body{padding:1.2rem}

/* Stats */
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;margin-bottom:1.5rem}
.stat-card{background:var(--surface);border-radius:var(--radius);padding:1.2rem;box-shadow:var(--shadow);border:1px solid var(--border);display:flex;align-items:center;gap:1rem}
.stat-icon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.5rem}
.stat-info h4{font-size:1.5rem;line-height:1}.stat-info p{font-size:.8rem;color:var(--text-muted)}

/* Announcements */
.announcement-card{border-left:4px solid var(--primary);margin-bottom:1rem}
.announcement-card.priority-high{border-left-color:var(--danger)}
.announcement-card.pinned{border-left-color:var(--warning)}
.announcement-meta{display:flex;gap:1rem;align-items:center;margin-top:.5rem;font-size:.8rem;color:var(--text-muted)}
.badge{display:inline-block;padding:.15rem .5rem;border-radius:20px;font-size:.75rem;font-weight:600}
.badge-general{background:#e0e7ff;color:#4338ca}
.badge-rh{background:#fce7f3;color:#be185d}
.badge-projet{background:#d1fae5;color:#065f46}
.badge-event{background:#fef3c7;color:#92400e}
.badge-high{background:#fee2e2;color:#991b1b}
.badge-medium{background:#fef3c7;color:#92400e}
.badge-low{background:#e0e7ff;color:#4338ca}

/* Team */
.team-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1rem}
.member-card{text-align:center;padding:1.5rem}
.avatar{width:72px;height:72px;border-radius:50%;background:var(--primary);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:1.5rem;font-weight:700;margin-bottom:.8rem}
.member-card h4{font-size:1rem;margin-bottom:.2rem}
.member-card .dept{color:var(--text-muted);font-size:.85rem}
.member-card .member-role{font-size:.75rem;margin-top:.3rem}

/* Events */
.event-list{display:flex;flex-direction:column;gap:.8rem}
.event-item{display:flex;gap:1rem;padding:1rem;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface)}
.event-date-box{min-width:60px;text-align:center;padding:.5rem;border-radius:var(--radius)}
.event-date-box .day{font-size:1.5rem;font-weight:700;line-height:1}
.event-date-box .month{font-size:.75rem;text-transform:uppercase;color:var(--text-muted)}
.event-details h4{font-size:.95rem;margin-bottom:.2rem}
.event-details p{font-size:.8rem;color:var(--text-muted)}

/* Tasks */
.tasks-board{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}
.task-column h3{font-size:.9rem;padding:.7rem;text-align:center;border-radius:var(--radius) var(--radius) 0 0;color:#fff}
.task-column.todo h3{background:#64748b}
.task-column.in-progress h3{background:var(--primary)}
.task-column.done h3{background:var(--success)}
.task-list{min-height:200px;padding:.5rem}
.task-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:.8rem;margin-bottom:.5rem}
.task-card h4{font-size:.85rem;margin-bottom:.4rem}
.task-card .task-meta{display:flex;justify-content:space-between;font-size:.75rem;color:var(--text-muted)}

/* Documents */
.doc-table{width:100%;border-collapse:collapse}
.doc-table th,.doc-table td{padding:.7rem 1rem;text-align:left;border-bottom:1px solid var(--border)}
.doc-table th{font-size:.8rem;text-transform:uppercase;color:var(--text-muted);font-weight:600}
.doc-table tr:hover{background:var(--bg)}
.file-icon{font-size:1.3rem;margin-right:.5rem}

/* Chat */
.chat-container{display:grid;grid-template-columns:200px 1fr;height:calc(100vh - 130px);gap:0;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;background:var(--surface)}
.channels-list{border-right:1px solid var(--border);padding:1rem 0}
.channels-list h4{padding:0 1rem .5rem;font-size:.8rem;text-transform:uppercase;color:var(--text-muted)}
.channel-item{padding:.5rem 1rem;cursor:pointer;font-size:.9rem;transition:background .2s}
.channel-item:hover,.channel-item.active{background:var(--primary-light);color:var(--primary)}
.chat-main{display:flex;flex-direction:column}
.chat-messages{flex:1;overflow-y:auto;padding:1rem;display:flex;flex-direction:column;gap:.8rem}
.message{display:flex;gap:.6rem}
.message .msg-avatar{width:36px;height:36px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:.8rem;font-weight:700;flex-shrink:0}
.message .msg-content{flex:1}
.message .msg-header{display:flex;align-items:baseline;gap:.5rem}
.message .msg-name{font-weight:600;font-size:.85rem}
.message .msg-time{font-size:.7rem;color:var(--text-muted)}
.message .msg-text{font-size:.9rem;margin-top:.2rem}
.chat-input{display:flex;gap:.5rem;padding:.8rem;border-top:1px solid var(--border)}
.chat-input input{flex:1;padding:.6rem .8rem;border:1px solid var(--border);border-radius:var(--radius);font-size:.9rem}
.chat-input input:focus{outline:none;border-color:var(--primary)}

/* Modal */
.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.5);display:flex;align-items:center;justify-content:center;z-index:200}
.modal{background:var(--surface);border-radius:12px;width:100%;max-width:520px;max-height:90vh;overflow-y:auto;box-shadow:0 20px 60px rgba(0,0,0,.2)}
.modal-header{display:flex;align-items:center;justify-content:space-between;padding:1rem 1.2rem;border-bottom:1px solid var(--border)}
.modal-header h3{font-size:1.05rem}
.modal-close{background:none;border:none;font-size:1.5rem;cursor:pointer;color:var(--text-muted)}
.modal-body{padding:1.2rem}
.modal-body .btn{margin-top:.5rem}

/* Empty state */
.empty-state{text-align:center;padding:3rem;color:var(--text-muted)}
.empty-state .empty-icon{font-size:3rem;margin-bottom:1rem}

/* Responsive */
@media(max-width:768px){
  .sidebar{transform:translateX(-100%)}
  .sidebar.open{transform:translateX(0)}
  .content{margin-left:0}
  .menu-toggle{display:block}
  .tasks-board{grid-template-columns:1fr}
  .chat-container{grid-template-columns:1fr}
  .channels-list{display:none}
  .form-row{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr 1fr}
}