:root{
  --primary:#4da3ff;
  --primary-soft:#e9f4ff;
  --bg:#ffffff;
  --text:#0f172a;
  --muted:#64748b;
  --error:#ef4444;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:"Cairo",system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,"Noto Sans",sans-serif;
  background:linear-gradient(135deg,var(--primary-soft),#ffffff);
  color:var(--text);
}
.container{
  min-height:100dvh;
  display:grid;
  place-items:center;
  padding:24px;
}
.card{
  width:100%;
  max-width:420px;
  background:var(--bg);
  border-radius:16px;
  box-shadow:0 10px 30px rgba(77,163,255,.18);
  padding:28px;
}
.title{
  margin:0 0 4px;
  font-size:24px;
  font-weight:700;
}
.subtitle{
  margin:0 0 16px;
  color:var(--muted);
  font-size:14px;
}
.role-switch{
  display:flex;
  gap:8px;
  background:var(--primary-soft);
  padding:6px;
  border-radius:12px;
  margin-bottom:16px;
}
.role-btn{
  flex:1;
  padding:10px 12px;
  border:none;
  border-radius:10px;
  background:transparent;
  color:var(--text);
  font-weight:600;
  cursor:pointer;
}
.role-btn.active{
  background:var(--primary);
  color:#fff;
}
.form{display:flex;flex-direction:column;gap:10px;margin-top:6px}
.label{font-size:13px;color:var(--muted)}
.input{
  width:100%;
  padding:12px 14px;
  border:1px solid #e5e7eb;
  border-radius:10px;
  outline:none;
  background:#fff;
}
.input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(77,163,255,.15)}
.submit{
  margin-top:8px;
  padding:12px 14px;
  border:none;
  border-radius:10px;
  background:var(--primary);
  color:#fff;
  font-weight:700;
  cursor:pointer;
}
.submit:hover{filter:brightness(.98)}
.error{min-height:20px;color:var(--error);font-size:13px}

/* Full-screen admin layout */
.admin .container{min-height:100dvh;display:block;padding:0}
.admin .card{width:100%;max-width:none;min-height:100dvh;border-radius:0;box-shadow:none;padding:16px}

.admin-header{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.logout{
  padding:10px 12px;
  border:none;
  border-radius:10px;
  background:#ef4444;
  color:#fff;
  font-weight:700;
  cursor:pointer;
}
.admin-tabs{
  display:flex;
  gap:8px;
  background:var(--primary-soft);
  padding:6px;
  border-radius:12px;
  margin:16px 0;
}
.tab-btn{
  flex:1;
  padding:10px 12px;
  border:none;
  border-radius:10px;
  background:transparent;
  color:var(--text);
  font-weight:600;
  cursor:pointer;
}
.tab-btn.active{background:var(--primary);color:#fff}
.tab-section{margin-top:8px}
.hidden{display:none}
.section-title{margin:0 0 10px;font-size:18px;font-weight:700}
.section-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.section-card{background:var(--primary-soft);border-radius:12px;padding:14px}

@media (max-width:640px){
  .section-grid{grid-template-columns:1fr}
}

/* Users management */
.user-toolbar{display:flex;justify-content:flex-start;margin:8px 0}
.collapsible{max-height:0;overflow:hidden;opacity:0;visibility:hidden;transform:translateY(-4px);transition:max-height .25s ease, opacity .25s ease, transform .25s ease, visibility .25s}
.collapsible.open{max-height:800px;opacity:1;visibility:visible;transform:none;margin-top:6px}
.user-form{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:10px 0}
.user-form .form-row{display:flex;flex-direction:column}
.users-list{display:flex;flex-direction:column;gap:10px;margin-top:8px}
.user-row{display:flex;align-items:center;justify-content:space-between;padding:10px;border:1px solid #e5e7eb;border-radius:10px;background:#fff}
.user-info{display:flex;align-items:center;gap:10px}
.user-avatar{width:40px;height:40px;border-radius:50%;object-fit:cover;background:var(--primary-soft)}
.user-name{font-weight:700}
.user-meta{font-size:12px;color:var(--muted)}
.row-actions{display:flex;align-items:center;gap:8px}
.row-btn{padding:8px 10px;border:none;border-radius:8px;background:var(--primary-soft);cursor:pointer}
.row-btn.danger{background:#ffe5e5;color:#b91c1c}
.modal{position:fixed;inset:0;background:rgba(0,0,0,.25);display:none;align-items:center;justify-content:center;padding:16px;z-index:50}
.modal.open{display:flex}
.modal-card{width:100%;max-width:520px;background:#fff;border-radius:16px;box-shadow:0 10px 30px rgba(0,0,0,.2);padding:16px}
.modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.modal-title{margin:0;font-size:18px;font-weight:700}
.modal-close{border:none;background:transparent;font-size:20px;cursor:pointer}
.edit-form{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.edit-form .form-row{display:flex;flex-direction:column}
.preview{grid-column:1/-1;display:flex;align-items:center;gap:10px}
.modal-actions{grid-column:1/-1;display:flex;justify-content:flex-end;gap:10px;margin-top:4px}
.switch{position:relative;display:inline-block;width:46px;height:26px}
.switch input{opacity:0;width:0;height:0}
.slider{position:absolute;cursor:pointer;top:0;left:0;right:0;bottom:0;background:#e5e7eb;border-radius:999px;transition:.2s}
.slider:before{content:"";position:absolute;height:20px;width:20px;left:3px;top:3px;background:#fff;border-radius:50%;transition:.2s}
.switch input:checked + .slider{background:var(--primary)}
.switch input:checked + .slider:before{transform:translateX(20px)}

@media (max-width:720px){
  .user-form{grid-template-columns:1fr}
  .edit-form{grid-template-columns:1fr}
}

.project-toolbar{display:flex;justify-content:flex-start;margin:8px 0}
.project-form{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:10px 0}
.projects-list{display:flex;flex-direction:column;gap:10px;margin-top:8px}
.project-row{display:flex;align-items:center;justify-content:space-between;padding:10px;border:1px solid #e5e7eb;border-radius:10px;background:#fff}
.project-info{display:flex;flex-direction:column;gap:4px}
.project-name{font-weight:700}
.project-meta{font-size:12px;color:var(--muted)}

@media (max-width:720px){
  .project-form{grid-template-columns:1fr}
}

/* Tasks tab */
.tasks-projects{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:8px;justify-items:stretch;align-items:stretch}
.task-project-card{background:#fff;border:2px solid var(--primary);border-radius:10px;padding:12px;cursor:pointer;width:100%;min-height:110px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:6px}
.task-project-card .project-name{font-weight:700;font-size:14px}
.task-project-card .project-metrics{font-size:12px;color:var(--muted)}
.card-actions{margin-top:8px;display:flex;justify-content:center}
.task-project-card:hover{box-shadow:0 6px 18px rgba(0,0,0,.08)}
.modal-wide{max-width:1000px}
.modal-full{max-width:none;height:100dvh;border-radius:0;box-shadow:none}
.task-toolbar{display:flex;justify-content:space-between;align-items:center;margin:8px 0}
.task-form{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:10px 0}
.task-form .input{border:2px solid var(--primary)}
.task-form .input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(77,163,255,.15)}
.board{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin-top:8px}
.column{background:#f8fafc;border:1px solid #e5e7eb;border-radius:12px;display:flex;flex-direction:column}
.column-title{padding:10px;font-weight:700;color:var(--text)}
.column-body{min-height:180px;padding:10px;display:flex;flex-direction:column;gap:8px}
.task-card{background:#fff;border:2px solid var(--primary);border-radius:10px;padding:10px;cursor:grab}
.task-type{font-weight:700}
.task-details{font-size:12px;color:var(--muted);margin-top:4px}

@media (max-width:960px){
  .tasks-projects{grid-template-columns:repeat(2,1fr)}
  .board{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:640px){
  .tasks-projects{grid-template-columns:1fr}
  .task-form{grid-template-columns:1fr}
}