/* ============================================================
   SMCairn — Client App Stylesheet
   Shared across all authenticated + auth-flow pages
   ============================================================ */

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:       #0f1f24;
  --bg-card:  rgba(255,255,255,.04);
  --surface:  #17303b;
  --border:   rgba(255,255,255,.10);
  --text:     #e8edef;
  --text-dim: #8fa3ab;
  --accent:   #006d77;
  --accent-l: #009da8;
  --glow:     rgba(0,109,119,.3);
  --emerald:  #00d084;
  --cyan:     #00a6fb;
  --red:      #ef4444;
  --amber:    #fbbf24;
  --radius:   10px;
  --font:     'Inter', system-ui, -apple-system, sans-serif;
}
html{font-size:16px;scroll-behavior:smooth}
body{
  font-family:var(--font);background:var(--bg);color:var(--text);
  line-height:1.6;min-height:100vh;display:flex;flex-direction:column;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--accent-l);text-decoration:none;transition:color .2s}
a:hover{color:#80e8c2}

/* --- Particle canvas -------------------------------------- */
#particle-canvas{
  position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.45;
}
.navbar,.main-content,.app-footer{position:relative;z-index:1}

/* --- Container -------------------------------------------- */
.container{max-width:1100px;margin:0 auto;padding:0 24px}

/* --- Navbar ----------------------------------------------- */
.navbar{
  background:rgba(15,31,36,.9);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
  position:sticky;top:0;z-index:100;
}
.navbar .container{display:flex;align-items:center;justify-content:space-between;height:60px}
.navbar-brand{
  display:flex;align-items:center;gap:10px;
  font-weight:700;font-size:1.2rem;color:#fff;
}
.cairn-logo{flex-shrink:0}
.nav-right{display:flex;align-items:center;gap:20px}
.nav-link{font-size:.9rem;color:var(--text-dim);font-weight:500}
.nav-link:hover{color:#fff}
.nav-user{font-size:.85rem;color:var(--text-dim)}

/* --- Buttons ---------------------------------------------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:10px 24px;border-radius:8px;font-weight:600;font-size:.9rem;
  border:none;cursor:pointer;transition:transform .15s,box-shadow .2s,background .2s;
}
.btn-sm{padding:7px 18px;font-size:.82rem}
.btn-primary{
  background:linear-gradient(135deg,var(--accent),#004e56);color:#fff;
  box-shadow:0 2px 12px var(--glow);
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 4px 20px var(--glow)}
.btn-ghost{background:var(--bg-card);color:var(--text);border:1px solid var(--border)}
.btn-ghost:hover{border-color:var(--accent-l);color:#fff}
.btn-danger{background:var(--red);color:#fff}
.btn-block{width:100%}

/* --- Main content ----------------------------------------- */
.main-content{flex:1;padding:40px 0}

/* --- Auth pages (centered card) --------------------------- */
.auth-page{display:flex;align-items:center;justify-content:center;min-height:calc(100vh - 160px)}
.auth-card{
  width:100%;max-width:440px;
  background:var(--surface);border:1px solid var(--border);
  border-radius:16px;padding:40px 36px;
}
.auth-card h1{font-size:1.6rem;font-weight:800;margin-bottom:6px;text-align:center}
.auth-card .subtitle{color:var(--text-dim);text-align:center;margin-bottom:28px;font-size:.92rem}

/* --- Forms ------------------------------------------------ */
.form-group{margin-bottom:20px}
.form-group label{display:block;font-size:.82rem;font-weight:600;color:var(--text-dim);margin-bottom:6px}
.form-group input,
.form-group select,
.form-group textarea{
  width:100%;padding:10px 14px;border-radius:8px;
  background:var(--bg);border:1px solid var(--border);
  color:var(--text);font-size:.92rem;font-family:var(--font);
  transition:border-color .2s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus{
  outline:none;border-color:var(--accent-l);
  box-shadow:0 0 0 3px rgba(0,109,119,.2);
}
.form-group input::placeholder{color:var(--text-dim);opacity:.6}
.form-group .error-text{color:var(--red);font-size:.8rem;margin-top:4px}
.form-hint{font-size:.78rem;color:var(--text-dim);margin-top:4px}

/* --- Alerts ----------------------------------------------- */
.alert{
  padding:12px 16px;border-radius:8px;font-size:.9rem;margin-bottom:20px;
}
.alert-success{background:rgba(0,208,132,.1);border:1px solid rgba(0,208,132,.25);color:var(--emerald)}
.alert-error{background:rgba(239,68,68,.1);border:1px solid rgba(239,68,68,.25);color:var(--red)}
.alert-info{background:rgba(0,166,251,.1);border:1px solid rgba(0,166,251,.25);color:var(--cyan)}

/* --- Auth footer links ------------------------------------ */
.auth-links{text-align:center;margin-top:20px;font-size:.85rem;color:var(--text-dim)}
.auth-links a{color:var(--accent-l);font-weight:500}
.auth-divider{
  display:flex;align-items:center;gap:12px;margin:20px 0;
  font-size:.8rem;color:var(--text-dim);
}
.auth-divider::before,.auth-divider::after{content:'';flex:1;height:1px;background:var(--border)}

/* --- App footer ------------------------------------------- */
.app-footer{
  border-top:1px solid var(--border);padding:20px 0;
  font-size:.8rem;color:var(--text-dim);
}
.app-footer .container{display:flex;justify-content:space-between;align-items:center}
.app-footer a{color:var(--text-dim)}
.app-footer a:hover{color:var(--accent-l)}

/* --- Cards ------------------------------------------------ */
.card{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);padding:24px;
  transition:border-color .2s,transform .2s;
}
.card:hover{border-color:var(--accent);transform:translateY(-2px)}

/* --- Workspace header ------------------------------------- */
.workspace-header{
  display:flex;align-items:center;justify-content:space-between;
  margin-bottom:32px;flex-wrap:wrap;gap:16px;
}
.workspace-header h1{font-size:1.6rem;font-weight:800}
.text-dim{color:var(--text-dim);font-size:.9rem;margin-top:4px}

/* --- Project grid ----------------------------------------- */
.project-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}
.project-card{display:block;color:var(--text);text-decoration:none}
.project-card h3{font-size:1.1rem;font-weight:700;margin:10px 0 4px}
.project-desc{color:var(--text-dim);font-size:.85rem;margin-bottom:12px;line-height:1.5}
.project-card-top{display:flex;justify-content:space-between;align-items:center}
.due-date{font-size:.78rem;color:var(--text-dim)}

/* Status badges */
.status-badge{
  font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;
  padding:3px 10px;border-radius:6px;
}
.status-active{background:rgba(0,208,132,.12);color:var(--emerald)}
.status-paused{background:rgba(251,191,36,.12);color:var(--amber)}
.status-done{background:rgba(0,166,251,.12);color:var(--cyan)}
.status-archived{background:rgba(255,255,255,.06);color:var(--text-dim)}

/* Progress bar */
.progress-bar-wrap{
  width:100%;height:6px;background:var(--border);border-radius:3px;
  margin:12px 0 8px;overflow:hidden;
}
.progress-bar{
  height:100%;border-radius:3px;
  background:linear-gradient(90deg,var(--accent),var(--emerald));
  transition:width .4s ease;
}
.project-card-meta{
  display:flex;justify-content:space-between;font-size:.78rem;color:var(--text-dim);
}

/* --- Empty state ------------------------------------------ */
.empty-state{
  text-align:center;padding:80px 20px;
  background:var(--surface);border:1px solid var(--border);border-radius:16px;
}
.empty-icon{font-size:3rem;margin-bottom:16px}
.empty-state h2{font-size:1.3rem;font-weight:700;margin-bottom:8px}
.empty-state p{color:var(--text-dim);max-width:400px;margin:0 auto 24px;font-size:.95rem}

/* --- Page header (reusable) ------------------------------- */
.page-header{margin-bottom:32px}
.page-header h1{font-size:1.5rem;font-weight:800}
.page-header p{color:var(--text-dim);font-size:.9rem;margin-top:4px}
.breadcrumb{font-size:.82rem;color:var(--text-dim);margin-bottom:8px}
.breadcrumb a{color:var(--accent-l)}
.breadcrumb span{margin:0 6px;opacity:.4}

/* --- Task tree -------------------------------------------- */
.task-tree{list-style:none}
.task-tree ul{list-style:none;padding-left:24px;border-left:1px solid var(--border);margin-left:12px}
.task-item{
  padding:10px 14px;margin:4px 0;border-radius:8px;
  display:flex;align-items:center;gap:12px;
  transition:background .15s;cursor:pointer;
}
.task-item:hover{background:var(--bg-card)}
.task-check{
  width:20px;height:20px;border-radius:6px;border:2px solid var(--border);
  display:grid;place-items:center;flex-shrink:0;cursor:pointer;
  transition:background .2s,border-color .2s;
}
.task-check.done{background:var(--emerald);border-color:var(--emerald);color:#fff;font-size:12px}
.task-title{flex:1;font-size:.92rem}
.task-title.done{text-decoration:line-through;color:var(--text-dim)}
.task-weight{font-size:.75rem;color:var(--text-dim);background:var(--bg-card);padding:2px 8px;border-radius:4px}
.task-pct{font-size:.82rem;font-weight:700;color:var(--cyan);min-width:44px;text-align:right}
.task-actions{display:flex;gap:6px;opacity:0;transition:opacity .2s}
.task-item:hover .task-actions{opacity:1}
.task-action-btn{
  background:none;border:none;color:var(--text-dim);cursor:pointer;
  padding:4px;font-size:.85rem;border-radius:4px;
}
.task-action-btn:hover{color:var(--text);background:var(--bg-card)}
.add-task-inline{
  display:flex;gap:8px;padding:8px 14px;margin:4px 0;
}
.add-task-inline input{
  flex:1;padding:8px 12px;border-radius:8px;
  background:var(--bg);border:1px solid var(--border);
  color:var(--text);font-size:.88rem;font-family:var(--font);
}
.add-task-inline input:focus{outline:none;border-color:var(--accent-l)}

/* --- My tasks list ---------------------------------------- */
.task-list{display:flex;flex-direction:column;gap:12px}
.task-list-item{padding:16px 20px}
.task-list-item:hover{transform:none}
.task-list-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px}
.task-project-name{font-size:.78rem;color:var(--accent-l);font-weight:600}
.task-list-title{font-size:1rem;font-weight:600}
.task-list-desc{color:var(--text-dim);font-size:.85rem;margin-top:4px}
.task-list-meta{display:flex;gap:16px;font-size:.78rem;color:var(--text-dim);margin-top:8px}
.priority-badge{font-size:.68rem;font-weight:700;text-transform:uppercase;padding:2px 8px;border-radius:4px}
.priority-critical{background:rgba(239,68,68,.15);color:var(--red)}
.priority-high{background:rgba(251,191,36,.12);color:var(--amber)}
.priority-low{background:rgba(255,255,255,.06);color:var(--text-dim)}

/* --- Responsive ------------------------------------------- */
@media(max-width:600px){
  .auth-card{margin:0 16px;padding:28px 20px}
  .app-footer .container{flex-direction:column;gap:8px;text-align:center}
  .project-grid{grid-template-columns:1fr}
  .workspace-header{flex-direction:column;align-items:flex-start}
}