/* ── Theme Variables ────────────────────────────────────────── */
:root, [data-theme="dark"] {
  --bg-primary: #111827;
  --bg-secondary: #1f2937;
  --bg-tertiary: #374151;
  --bg-card: #1f2937;
  --bg-input: #374151;
  --bg-hover: #4b5563;
  --text-primary: #f3f4f6;
  --text-secondary: #d1d5db;
  --text-muted: #9ca3af;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --accent-text: #60a5fa;
  --green: #16a34a;
  --green-hover: #15803d;
  --red: #dc2626;
  --red-hover: #b91c1c;
  --yellow: #eab308;
  --border: #374151;
  --shadow: 0 1px 3px rgba(0,0,0,0.3);
  --sidebar-width: 220px;
}

[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #e2e8f0;
  --bg-card: #ffffff;
  --bg-input: #e2e8f0;
  --bg-hover: #cbd5e1;
  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-text: #1d4ed8;
  --green: #16a34a;
  --green-hover: #15803d;
  --red: #dc2626;
  --red-hover: #b91c1c;
  --yellow: #ca8a04;
  --border: #cbd5e1;
  --shadow: 0 1px 3px rgba(0,0,0,0.1);
}

[data-theme="beige"] {
  --bg-primary: #faf6f1;
  --bg-secondary: #fff8f0;
  --bg-tertiary: #ede4d8;
  --bg-card: #fff8f0;
  --bg-input: #ede4d8;
  --bg-hover: #d9ccbc;
  --text-primary: #3d3226;
  --text-secondary: #5c4a35;
  --text-muted: #8b7355;
  --accent: #8b5e3c;
  --accent-hover: #6b4530;
  --accent-text: #8b5e3c;
  --green: #5d8a4e;
  --green-hover: #4a703e;
  --red: #b85444;
  --red-hover: #8d3a2d;
  --yellow: #b8860b;
  --border: #d9ccbc;
  --shadow: 0 1px 3px rgba(0,0,0,0.08);
}

/* ── Reset ─────────────────────────────────────────────────── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;background:var(--bg-primary);color:var(--text-primary);min-height:100vh}
a{color:var(--accent-text);text-decoration:none}
a:hover{opacity:0.8}

/* ── Layout ────────────────────────────────────────────────── */
#app{display:flex;min-height:100vh}
#sidebar{width:var(--sidebar-width);background:var(--bg-secondary);border-right:1px solid var(--border);padding:1.25rem 1rem;display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:40;overflow-y:auto}
#main{padding:1.5rem 2rem;width:100%}
#sidebar-logo{font-size:1.25rem;font-weight:700;color:var(--accent-text);margin-bottom:1.5rem;display:flex;align-items:center;gap:0.5rem}

/* ── Sidebar Nav ───────────────────────────────────────────── */
.nav-item{display:flex;align-items:center;gap:0.6rem;padding:0.6rem 0.75rem;border-radius:0.5rem;color:var(--text-secondary);cursor:pointer;transition:all 0.15s;font-size:0.9rem;margin-bottom:0.25rem}
.nav-item:hover{background:var(--bg-hover);color:var(--text-primary)}
.nav-item.active{background:var(--accent);color:#fff}
.nav-item .icon{font-size:1.1rem;width:1.3rem;text-align:center}
.nav-spacer{flex:1}

/* ── User section ──────────────────────────────────────────── */
#sidebar-user{border-top:1px solid var(--border);padding-top:0.75rem;margin-top:0.5rem}
#sidebar-user .name{color:var(--text-primary);font-weight:600;font-size:0.85rem}
#sidebar-user .email{color:var(--text-muted);font-size:0.75rem}
#sidebar-user .actions{margin-top:0.4rem;display:flex;gap:0.5rem}
#sidebar-user .actions button{background:none;border:none;color:var(--text-muted);cursor:pointer;font-size:0.8rem;padding:0.2rem 0}
#sidebar-user .actions button:hover{color:var(--accent-text)}

/* ── Badge / Status ────────────────────────────────────────── */
.notif-badge{background:var(--red);color:#fff;font-size:0.65rem;padding:0.1rem 0.4rem;border-radius:1rem;margin-left:auto}
.status-dot{width:9px;height:9px;border-radius:50%;display:inline-block;margin-right:0.3rem}
.status-running{background:var(--green)}
.status-stopped{background:var(--text-muted)}
.status-error{background:var(--red)}

/* ── Buttons ───────────────────────────────────────────────── */
.btn{padding:0.5rem 1rem;border-radius:0.5rem;border:none;cursor:pointer;font-size:0.85rem;font-weight:500;transition:all 0.15s;display:inline-flex;align-items:center;gap:0.3rem}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-hover)}
.btn-success{background:var(--green);color:#fff}
.btn-success:hover{background:var(--green-hover)}
.btn-danger{background:var(--red);color:#fff}
.btn-danger:hover{background:var(--red-hover)}
.btn-ghost{background:var(--bg-tertiary);color:var(--text-secondary)}
.btn-ghost:hover{background:var(--bg-hover)}
.btn-sm{padding:0.3rem 0.6rem;font-size:0.75rem;border-radius:0.35rem}
.btn-xs{padding:0.15rem 0.4rem;font-size:0.7rem;border-radius:0.3rem}

/* ── Cards ─────────────────────────────────────────────────── */
.card{background:var(--bg-card);border:1px solid var(--border);border-radius:0.75rem;padding:1.25rem;box-shadow:var(--shadow);transition:border-color 0.15s}
.card:hover{border-color:var(--accent)}
.card-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:0.75rem}
.card-title{font-weight:600;font-size:1.05rem}
.card-body{font-size:0.85rem;color:var(--text-secondary)}
.card-footer{display:flex;gap:0.4rem;margin-top:1rem;flex-wrap:wrap}

/* ── Forms ─────────────────────────────────────────────────── */
input,textarea,select{width:100%;background:var(--bg-input);border:1px solid var(--border);border-radius:0.5rem;padding:0.55rem 0.75rem;color:var(--text-primary);font-size:0.85rem;outline:none;transition:border-color 0.15s}
input:focus,textarea:focus,select:focus{border-color:var(--accent)}
label{font-size:0.8rem;color:var(--text-muted);margin-bottom:0.25rem;display:block}

/* ── Modal ─────────────────────────────────────────────────── */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.6);display:flex;align-items:center;justify-content:center;z-index:100}
.modal-content{background:var(--bg-card);border-radius:0.75rem;padding:1.5rem;width:90%;max-width:600px;max-height:90vh;overflow-y:auto;box-shadow:0 20px 60px rgba(0,0,0,0.4)}
.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}
.modal-title{font-size:1.2rem;font-weight:700}
.modal-close{background:none;border:none;color:var(--text-muted);font-size:1.5rem;cursor:pointer;line-height:1}
.modal-close:hover{color:var(--text-primary)}

/* ── Confirm Dialog ────────────────────────────────────────── */
.confirm-buttons{display:flex;gap:0.75rem;justify-content:flex-end;margin-top:1.5rem}

/* ── Metrics grid ──────────────────────────────────────────── */
.metrics-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0.75rem;margin-bottom:1.5rem}
.metric-card{background:var(--bg-card);border:1px solid var(--border);border-radius:0.75rem;padding:1rem;text-align:center}
.metric-label{font-size:0.7rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:0.05em}
.metric-value{font-size:1.5rem;font-weight:700;margin:0.25rem 0}
.metric-detail{font-size:0.7rem;color:var(--text-muted)}

/* ── Chat ──────────────────────────────────────────────────── */
.chat-container{display:flex;flex-direction:column;height:calc(100vh - 8rem)}
.chat-messages{flex:1;overflow-y:auto;padding:1rem;background:var(--bg-secondary);border-radius:0.75rem;border:1px solid var(--border);margin-bottom:0.75rem}
.chat-msg{margin-bottom:0.75rem;animation:fadeIn 0.2s}
.chat-bubble{padding:0.7rem 1rem;border-radius:0.75rem;max-width:80%;font-size:0.9rem;line-height:1.5}
.chat-msg.assistant .chat-bubble{background:var(--bg-tertiary);border:1px solid var(--border)}
.chat-msg.user .chat-bubble{background:var(--accent);color:#fff;margin-left:auto}
@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}

/* ── Settings Panel ────────────────────────────────────────── */
.settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.theme-preview{width:100%;height:60px;border-radius:0.5rem;border:2px solid var(--border);cursor:pointer;transition:all 0.15s;display:flex;align-items:center;justify-content:center;font-size:0.8rem;font-weight:600}
.theme-preview:hover{border-color:var(--accent)}
.theme-preview.active{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent)}
.theme-dark{background:#111827;color:#f3f4f6}
.theme-light{background:#f8fafc;color:#0f172a}
.theme-beige{background:#faf6f1;color:#3d3226}

/* ── Login / Register ──────────────────────────────────────── */
.auth-card{background:var(--bg-card);border-radius:0.75rem;padding:2rem;width:100%;max-width:400px;box-shadow:var(--shadow)}
.auth-title{font-size:1.5rem;font-weight:700;text-align:center;margin-bottom:1.5rem;color:var(--accent-text)}
.auth-form{display:flex;flex-direction:column;gap:1rem}
.auth-error{color:var(--red);font-size:0.8rem;text-align:center}

/* ── Utility ──────────────────────────────────────────────── */
.hidden{display:none!important}
.text-center{text-align:center}
.text-sm{font-size:0.8rem}
.text-xs{font-size:0.7rem}
.text-muted{color:var(--text-muted)}
.font-mono{font-family:'JetBrains Mono',monospace;font-size:0.8rem}
.mb-1{margin-bottom:0.5rem}
.mb-2{margin-bottom:0.75rem}
.mb-3{margin-bottom:1rem}
.mb-4{margin-bottom:1.5rem}
.mt-2{margin-top:0.75rem}
.mt-3{margin-top:1rem}
.mt-4{margin-top:1.5rem}
.mr-1{margin-right:0.5rem}
.flex{display:flex}
.flex-col{flex-direction:column}
.items-center{align-items:center}
.justify-between{justify-content:space-between}
.gap-1{gap:0.5rem}
.gap-2{gap:0.75rem}
.gap-3{gap:1rem}
.w-full{width:100%}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:0.75rem}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:0.75rem}
.p-2{padding:0.75rem}
.p-3{padding:1rem}
.py-1{padding-top:0.5rem;padding-bottom:0.5rem}

/* ── Responsive ────────────────────────────────────────────── */
@media(max-width:768px){
  #sidebar{width:60px;padding:1rem 0.5rem}
  #sidebar-logo span,.nav-item span:not(.icon),#sidebar-user{display:none}
  #main{padding:1rem}
  .metrics-grid{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:1fr}
}