/* ═══════════════════════════════════════════════════════════
   MAC — MBM AI Cloud · Premium Theme v3
   ═══════════════════════════════════════════════════════════ */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--bg:#fff;--fg:#000;--muted:#666;--border:#e0e0e0;--card:#fafafa;--hover:#f5f5f5;--radius:10px;--shadow:0 1px 4px rgba(0,0,0,.06);--danger:#d32f2f;--success:#2e7d32}
html,body{height:100%;font-family:'Inter','Segoe UI',system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--fg);line-height:1.5;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
button{cursor:pointer;font:inherit;border:none;background:none}
input,select,textarea{font:inherit;border:1px solid var(--border);border-radius:var(--radius);padding:10px 14px;background:var(--bg);color:var(--fg);outline:none;transition:border-color .15s,box-shadow .15s;width:100%}
input:focus,textarea:focus,select:focus{border-color:#000;box-shadow:0 0 0 3px rgba(0,0,0,.06)}
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-thumb{background:#ccc;border-radius:3px}

/* ── Glitch MAC text ──────────────────────────────────── */
.glitch{position:relative;display:inline-block;font-family:'Courier New',monospace;font-weight:900;letter-spacing:.15em;color:#000}
.glitch::before,.glitch::after{content:attr(data-text);position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none}
.glitch::before{color:#000;animation:glitch-1 3s infinite linear alternate-reverse;clip-path:inset(0 0 65% 0);text-shadow:-2px 0 rgba(255,0,0,.35)}
.glitch::after{color:#000;animation:glitch-2 2.5s infinite linear alternate-reverse;clip-path:inset(65% 0 0 0);text-shadow:2px 0 rgba(0,0,255,.35)}
@keyframes glitch-1{0%,100%{clip-path:inset(0 0 65% 0);transform:translate(0)}20%{clip-path:inset(10% 0 55% 0);transform:translate(-3px,1px)}40%{clip-path:inset(30% 0 40% 0);transform:translate(2px,-1px)}60%{clip-path:inset(5% 0 70% 0);transform:translate(-1px,2px)}80%{clip-path:inset(20% 0 50% 0);transform:translate(3px,0)}}
@keyframes glitch-2{0%,100%{clip-path:inset(65% 0 0 0);transform:translate(0)}25%{clip-path:inset(50% 0 10% 0);transform:translate(2px,-2px)}50%{clip-path:inset(70% 0 5% 0);transform:translate(-3px,1px)}75%{clip-path:inset(60% 0 15% 0);transform:translate(1px,2px)}}

/* Background particle canvas */
#bg-canvas{position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:0;user-select:none}

/* Auth toggle link (pill box) */
.auth-toggle{display:inline-block;padding:8px 20px;border:1.5px solid var(--border);border-radius:var(--radius);font-size:.85rem;color:var(--muted);transition:all .2s ease;cursor:pointer;text-decoration:none;font-weight:500}
.auth-toggle:hover{background:#000;color:#fff;border-color:#000}
.auth-toggle .link-word{font-weight:700;transition:color .2s ease}
.auth-toggle:hover .link-word{color:#fff}

/* ── Password field with eye toggle ───────────────────── */
.pw-wrap{position:relative}
.pw-wrap input{width:100%;padding-right:44px}
.pw-toggle{position:absolute;right:1px;top:1px;bottom:1px;width:40px;display:flex;align-items:center;justify-content:center;background:transparent;border:none;cursor:pointer;color:var(--muted);font-size:1.1rem;border-radius:0 var(--radius) var(--radius) 0;transition:color .15s}
.pw-toggle:hover{color:#000}
.pw-toggle svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* ── Auth pages ───────────────────────────────────────── */
.auth-page{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:20px;position:relative;z-index:1}
.auth-card{width:100%;max-width:400px;padding:48px 32px;background:var(--bg);border:1px solid var(--border);border-radius:16px;box-shadow:0 4px 24px rgba(0,0,0,.06);text-align:center}
.auth-card .logo{font-size:4rem;margin-bottom:8px}
.auth-card .subtitle{color:var(--muted);font-size:.85rem;margin-bottom:32px}
.auth-card .field{margin-bottom:16px;text-align:left}
.auth-card .field label{display:block;font-size:.72rem;font-weight:600;margin-bottom:4px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
.auth-card .field input{width:100%;padding:10px 14px;font-size:.95rem}
.auth-card .error{color:var(--danger);font-size:.85rem;margin-bottom:12px;min-height:20px}
.auth-card .success{color:var(--success);font-size:.85rem;margin-bottom:12px;min-height:20px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 24px;border-radius:var(--radius);font-weight:600;font-size:.9rem;transition:all .15s}
.btn-primary{background:#000;color:#fff;width:100%;padding:12px}
.btn-primary:hover{background:#222}
.btn-sm{padding:6px 14px;font-size:.8rem}
.btn-outline{border:1px solid var(--border)}
.btn-outline:hover{background:var(--hover)}
.btn-danger{background:var(--danger);color:#fff}
.btn-danger:hover{background:#b71c1c}
.btn-danger-outline{border:1px solid var(--danger);color:var(--danger)}
.btn-danger-outline:hover{background:#fef2f2}

/* ── App shell ────────────────────────────────────────── */
.shell{display:flex;height:100vh;position:relative;z-index:1}
.sidebar-overlay{display:none}
.sidebar{width:230px;border-right:1px solid var(--border);display:flex;flex-direction:column;background:var(--bg);flex-shrink:0;transition:transform .3s ease}
.sidebar-header{padding:20px;border-bottom:1px solid var(--border)}
.sidebar-header .brand{font-size:1.5rem}
.sidebar-nav{flex:1;padding:12px 8px}
.sidebar-nav a{display:flex;align-items:center;gap:10px;padding:10px 16px;font-size:.88rem;color:var(--muted);border-radius:var(--radius);margin-bottom:2px;transition:all .12s}
.sidebar-nav a:hover{color:#000;background:var(--hover)}
.sidebar-nav a.active{color:#000;background:var(--hover);font-weight:600;box-shadow:inset 3px 0 0 #000}
.sidebar-user{padding:16px 20px;border-top:1px solid var(--border);display:flex;gap:10px;align-items:center;font-size:.8rem}
.sidebar-user .name{color:#000;font-weight:600}
.user-avatar{width:32px;height:32px;border-radius:50%;background:#000;color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.85rem;flex-shrink:0}
.sidebar-logout{margin:0 16px 16px;text-align:center;gap:6px}
.main-content{flex:1;overflow-y:auto;display:flex;flex-direction:column;min-width:0}
.topbar{display:flex;align-items:center;justify-content:space-between;padding:14px 24px;border-bottom:1px solid var(--border);background:var(--bg);position:sticky;top:0;z-index:10}
.topbar h1{font-size:1.05rem;font-weight:700}
.topbar-right{display:flex;align-items:center;gap:8px}
.status-dot{width:7px;height:7px;background:var(--success);border-radius:50%;display:inline-block}
.page{flex:1;padding:24px;max-width:1200px;width:100%}
.menu-btn{display:none!important}

/* ── Loading & Error States ──────────────────────────── */
.loading-state{display:flex;align-items:center;justify-content:center;gap:12px;padding:60px;color:var(--muted);font-size:.9rem}
.mac-loader{position:relative;width:56px;height:56px;flex-shrink:0;display:grid;place-items:center}
.mac-micro-loader{position:relative;width:46px;height:46px;display:grid;place-items:center;animation:micro-drift 3.6s cubic-bezier(.42,0,.28,1) infinite}
.mac-pulse{position:absolute;inset:0;border-radius:50%;border:1.2px solid rgba(0,0,0,.35);opacity:0;pointer-events:none}
.mac-pulse.p1{animation:micro-pulse 2.4s cubic-bezier(.16,.84,.32,1) infinite}
.mac-pulse.p2{animation:micro-pulse 2.4s cubic-bezier(.16,.84,.32,1) 1.2s infinite}
.mac-circle{position:absolute;border-radius:50%;pointer-events:none}
.mac-circle.c1{inset:5px;border:1.2px solid rgba(0,0,0,.26);animation:micro-rotate 5.8s linear infinite}
.mac-circle.c2{inset:9px;border:1.2px dashed rgba(0,0,0,.4);animation:micro-rotate-rev 4.6s linear infinite}
.mac-cell{position:relative;width:32px;height:32px;border:1.6px solid #000;border-radius:42% 58% 47% 53% / 57% 43% 56% 44%;background:radial-gradient(circle at 30% 28%,#fff 0 28%,#d9d9d9 55%,#b3b3b3 100%);animation:micro-cell-morph 2.8s cubic-bezier(.4,0,.2,1) infinite}
.mac-cell::after{content:"";position:absolute;inset:4px;border:1px dashed rgba(0,0,0,.35);border-radius:inherit;opacity:.75;animation:micro-inner-rotate 6.2s linear infinite}
.mac-heart-text{position:absolute;left:50%;top:50%;z-index:2;transform:translate(-50%,-50%);width:16px;height:12px;font-family:'Courier New',monospace;font-size:13px;font-weight:900;line-height:1;color:#000;display:block;animation:micro-heart 2.1s cubic-bezier(.25,.1,.25,1) infinite}
.mac-heart-text span{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;opacity:0;transform:translateY(0) scale(.82);filter:blur(.3px)}
.mac-heart-text span:nth-child(1){animation:micro-letter-m1 2.1s linear infinite}
.mac-heart-text span:nth-child(2){animation:micro-letter-m2 2.1s linear infinite}
.mac-heart-text span:nth-child(3){animation:micro-letter-m3 2.1s linear infinite}
@keyframes micro-cell-morph{
   0%,100%{border-radius:42% 58% 47% 53% / 57% 43% 56% 44%;transform:rotate(0deg) scale(1)}
   33%{border-radius:56% 44% 54% 46% / 48% 52% 44% 56%;transform:rotate(2.8deg) scale(1.02)}
   66%{border-radius:47% 53% 43% 57% / 54% 46% 60% 40%;transform:rotate(-2.5deg) scale(.985)}
}
@keyframes micro-pulse{
   0%{transform:scale(.72);opacity:.34}
   100%{transform:scale(1.12);opacity:0}
}
@keyframes micro-rotate{to{transform:rotate(360deg)}}
@keyframes micro-rotate-rev{to{transform:rotate(-360deg)}}
@keyframes micro-inner-rotate{to{transform:rotate(-360deg)}}
@keyframes micro-heart{
   0%,100%{transform:translate(-50%,-50%) scale(1)}
   14%{transform:translate(-50%,-50%) scale(1.08)}
   28%{transform:translate(-50%,-50%) scale(.99)}
   52%{transform:translate(-50%,-50%) scale(1.05)}
   68%{transform:translate(-50%,-50%) scale(1)}
}
@keyframes micro-letter-m1{
   0%,30%{opacity:1;filter:blur(0);transform:translateY(-.25px) scale(1.22)}
   36%,90%{opacity:0;filter:blur(.35px);transform:translateY(0) scale(.82)}
   96%,100%{opacity:1;filter:blur(0);transform:translateY(-.2px) scale(1.18)}
}
@keyframes micro-letter-m2{
   0%,28%{opacity:0;filter:blur(.35px);transform:translateY(0) scale(.82)}
   34%,62%{opacity:1;filter:blur(0);transform:translateY(-.25px) scale(1.22)}
   68%,100%{opacity:0;filter:blur(.35px);transform:translateY(0) scale(.82)}
}
@keyframes micro-letter-m3{
   0%,60%{opacity:0;filter:blur(.35px);transform:translateY(0) scale(.82)}
   66%,94%{opacity:1;filter:blur(0);transform:translateY(-.25px) scale(1.22)}
   100%{opacity:0;filter:blur(.35px);transform:translateY(0) scale(.82)}
}
@keyframes micro-drift{
   0%,100%{transform:translate(0,0)}
   50%{transform:translate(.6px,-.6px)}
}
@media (prefers-reduced-motion:reduce){
   .mac-micro-loader,.mac-pulse,.mac-circle,.mac-cell,.mac-cell::after,.mac-heart-text,.mac-heart-text span{animation:none}
}

/* Backward-compatible fallback class */
.spinner{width:18px;height:18px;border:2px solid var(--border);border-top-color:#000;border-radius:50%;animation:spin .6s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.error-state{text-align:center;padding:60px 20px;color:var(--danger)}
.empty-state{text-align:center;padding:40px 20px;color:var(--muted)}

/* ═══════════════════════════════════════════════════════════
   DASHBOARD — Premium Components
   ═══════════════════════════════════════════════════════════ */

/* Greeting */
.dash-greeting{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:24px;flex-wrap:wrap;gap:12px}
.dash-greeting h2{font-size:1.2rem;font-weight:800;margin-bottom:2px}
.dash-greeting p{font-size:.82rem;color:var(--muted)}
.dash-greeting-api{text-align:right}
.dash-greeting-api .label{font-size:.65rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);display:block;margin-bottom:2px}
.api-key-mini{font-family:'Courier New',monospace;font-size:.78rem;background:var(--card);border:1px solid var(--border);padding:4px 10px;border-radius:6px;display:inline-block}

/* Stat Cards */
.stats-grid{display:grid;gap:16px;margin-bottom:24px}
.stats-4{grid-template-columns:repeat(4,1fr)}
.stats-3{grid-template-columns:repeat(3,1fr)}
.stat-card{display:flex;gap:14px;align-items:flex-start;padding:20px;border:1px solid var(--border);border-radius:var(--radius);background:var(--card);transition:box-shadow .2s}
.stat-card:hover{box-shadow:0 2px 12px rgba(0,0,0,.06)}
.stat-card.accent{border-color:#000}
.stat-icon{font-size:1.5rem;flex-shrink:0;margin-top:2px}
.stat-body{flex:1;min-width:0}
.stat-body .label{font-size:.68rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:2px}
.stat-body .value{font-size:1.6rem;font-weight:800;font-family:'Courier New',monospace;line-height:1.2}
.stat-body .sub{font-size:.72rem;color:var(--muted);margin-top:4px}

/* Progress Bars inside stat cards */
.stat-bar{width:100%;height:5px;background:#eee;border-radius:3px;margin-top:8px;overflow:hidden}
.stat-bar-fill{height:100%;background:#000;border-radius:3px;transition:width .8s ease}
.stat-bar-fill.warn{background:var(--danger)}

/* Charts Layout */
.charts-row{display:flex;gap:16px;margin-bottom:16px}
.charts-row .flex-1{flex:1;min-width:0}
.charts-row .flex-2{flex:2;min-width:0}
.chart-card{padding:20px;border:1px solid var(--border);border-radius:var(--radius);background:var(--card);margin-bottom:16px;overflow:hidden}
.chart-header{display:flex;align-items:baseline;gap:12px;margin-bottom:16px;flex-wrap:wrap}
.chart-header h3{font-size:.85rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em}
.chart-sub{font-size:.75rem;color:var(--muted)}
.chart-wrap-sm{position:relative;max-width:180px;height:180px;margin:0 auto}
.chart-legend{padding-top:12px}
.legend-item{display:flex;align-items:center;gap:8px;padding:4px 0;font-size:.8rem}
.legend-dot{width:10px;height:10px;border-radius:2px;flex-shrink:0}
.muted{color:var(--muted)}
.mono{font-family:'Courier New',monospace}
.bold{font-weight:700}

/* Quota Ring Charts */
.quota-rings{display:flex;justify-content:center;gap:32px;padding:16px 0}
.ring-wrap{position:relative;width:120px;height:120px}
.ring-label{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);text-align:center}
.ring-label .pct{display:block;font-size:1.1rem;font-weight:800;font-family:'Courier New',monospace}
.ring-label .lbl{display:block;font-size:.6rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}

/* ═══════════════════════════════════════════════════════════
   HEATMAP — GitHub-style contribution graph
   ═══════════════════════════════════════════════════════════ */
.heatmap-container{overflow-x:auto;padding:4px 0}
.heatmap-months{display:grid;margin-left:36px;margin-bottom:4px}
.hm-month{font-size:.72rem;font-weight:600;color:#555;text-align:left;padding-left:2px}
.heatmap-body{display:flex;gap:4px}
.heatmap-labels{display:flex;flex-direction:column;gap:3px;flex-shrink:0}
.heatmap-labels span{height:0;flex:1;display:flex;align-items:center;font-size:.65rem;font-weight:500;color:#777;width:30px;text-align:right;padding-right:4px;justify-content:flex-end}
.heatmap-grid{display:grid;grid-template-rows:repeat(7,1fr);grid-auto-flow:column;gap:3px;flex:1;min-width:0}
.hm-cell{aspect-ratio:1;border-radius:3px;transition:all .15s ease;min-width:0;cursor:pointer}
.hm-cell:hover{transform:scale(1.4);outline:2px solid #333;z-index:2;box-shadow:0 2px 8px rgba(0,0,0,.2)}
.hm-empty{background:#f0f0f0}
.hm-0{background:#ebedf0}
.hm-1{background:#c6c6c6}
.hm-2{background:#888}
.hm-3{background:#444}
.hm-4{background:#000}
.heatmap-legend{display:flex;align-items:center;gap:5px;justify-content:flex-end;margin-top:10px}
.heatmap-legend .hm-cell{width:13px;height:13px;flex:none;cursor:default}
.heatmap-legend .hm-cell:hover{transform:none;outline:none;box-shadow:none}

/* Chart empty state overlay */
.chart-empty{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;background:rgba(255,255,255,.85);border-radius:12px;z-index:5;gap:4px;text-align:center;padding:16px}
.chart-empty p{margin:0;font-size:.85rem;font-weight:600;color:#555}
.chart-empty span{font-size:.72rem;color:#999}
.heatmap-empty{text-align:center;padding:28px 16px;color:#999}
.heatmap-empty p{margin:4px 0 2px;font-size:.85rem;font-weight:600;color:#666}
.heatmap-empty span{font-size:.72rem}

/* ═══════════════════════════════════════════════════════════
   DATA TABLE — Shared table style
   ═══════════════════════════════════════════════════════════ */
.table-responsive{overflow-x:auto;-webkit-overflow-scrolling:touch}
.data-table{width:100%;border-collapse:collapse;font-size:.82rem}
.data-table th{text-align:left;padding:10px 12px;border-bottom:2px solid #000;font-size:.68rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);white-space:nowrap}
.data-table td{padding:10px 12px;border-bottom:1px solid var(--border);vertical-align:middle}
.data-table tr:hover td{background:var(--hover)}
.data-table .danger{color:var(--danger);font-weight:600}

/* Model tags / status dots */
.model-tag{display:inline-block;padding:2px 8px;background:#f0f0f0;border-radius:4px;font-size:.75rem;font-family:'Courier New',monospace;white-space:nowrap}
.dot-success{display:inline-block;width:7px;height:7px;background:var(--success);border-radius:50%;margin-right:4px}
.dot-error{display:inline-block;width:7px;height:7px;background:var(--danger);border-radius:50%;margin-right:4px}

/* Badges */
.badge{display:inline-block;padding:2px 8px;border-radius:4px;font-size:.68rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em}
.badge-admin{background:#000;color:#fff}
.badge-faculty{background:#555;color:#fff}
.badge-student{background:#eee;color:#000}

/* Models grid (user dashboard) */
.models-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}
.model-card{padding:14px 16px;border:1px solid var(--border);border-radius:var(--radius);display:flex;align-items:center;justify-content:space-between}
.model-name{font-size:.82rem;font-weight:600;font-family:'Courier New',monospace}
.model-status{font-size:.72rem;font-weight:600}
.model-status.online{color:var(--success)}
.model-status.offline{color:var(--muted)}
.status-dot{display:inline-block;width:8px;height:8px;border-radius:50%;vertical-align:middle;margin-right:2px}
.status-dot.on{background:var(--success)}
.status-dot.off{background:var(--muted)}

/* API Key box */
.api-key-box{display:flex;align-items:center;gap:10px;padding:12px;background:#f5f5f5;border:1px solid var(--border);border-radius:var(--radius)}
.api-key-box code{flex:1;font-family:'Courier New',monospace;font-size:.75rem;word-break:break-all;user-select:all}
.copy-btn{flex-shrink:0}

/* ═══════════════════════════════════════════════════════════
   ADMIN — Premium Components
   ═══════════════════════════════════════════════════════════ */

/* Admin Tabs */
.admin-tabs{display:flex;gap:0;border:1px solid var(--border);border-radius:var(--radius);overflow-x:auto;margin-bottom:24px;background:var(--card);-webkit-overflow-scrolling:touch}
.admin-tab{display:flex;align-items:center;gap:6px;padding:10px 20px;font-size:.82rem;font-weight:600;cursor:pointer;transition:all .12s;border-right:1px solid var(--border);white-space:nowrap;flex-shrink:0}
.admin-tab:last-child{border-right:none}
.admin-tab:hover{background:var(--hover)}
.admin-tab.active{background:#000;color:#fff}
.admin-tab svg{flex-shrink:0}

/* Admin Header */
.admin-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;flex-wrap:wrap;gap:10px}
.admin-header h2{font-size:1rem;font-weight:700}

/* Top Users Leaderboard */
.top-users-list{display:flex;flex-direction:column;gap:8px}
.top-user-row{display:flex;align-items:center;gap:12px;padding:8px 0}
.top-user-row .rank{font-size:.85rem;font-weight:800;color:var(--muted);width:28px;text-align:center;flex-shrink:0}
.top-user-info{min-width:0;flex-shrink:0;width:120px}
.top-user-info .name{font-size:.82rem;font-weight:600;display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.top-user-info .muted{font-size:.7rem}
.top-user-bar-wrap{flex:1;height:20px;background:#f0f0f0;border-radius:4px;overflow:hidden;min-width:60px}
.top-user-bar{height:100%;background:#000;border-radius:4px;transition:width .6s ease}
.top-user-val{font-family:'Courier New',monospace;font-size:.78rem;font-weight:700;flex-shrink:0;width:60px;text-align:right}

/* Admin Models Grid */
.models-grid-admin{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}
.model-card-admin{padding:20px;border:1px solid var(--border);border-radius:var(--radius);background:var(--card)}
.model-card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.model-stats-row{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.model-stats-row div{text-align:center;padding:8px;background:var(--hover);border-radius:6px}
.model-stats-row .label{font-size:.6rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);display:block;margin-bottom:2px}
.model-stats-row .val{font-size:.9rem;font-weight:700;font-family:'Courier New',monospace}

/* Action buttons in tables */
.action-btns{display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.icon-btn{width:28px;height:28px;border-radius:6px;border:1px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:.75rem;transition:all .12s;cursor:pointer}
.icon-btn:hover{background:var(--hover);border-color:#999}
.role-select{width:80px;padding:4px 6px;font-size:.75rem;border-radius:4px}

/* ═══════════════════════════════════════════════════════════
   CHAT
   ═══════════════════════════════════════════════════════════ */
.chat-layout{display:flex;height:100%;gap:0}
.chat-sessions{width:240px;border-right:1px solid var(--border);display:flex;flex-direction:column;background:var(--card);flex-shrink:0}
.chat-sessions-header{padding:12px 16px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}
.chat-sessions-header h3{font-size:.85rem;font-weight:700}
.session-list{flex:1;overflow-y:auto;padding:8px}
.session-item{padding:10px 12px;border-radius:var(--radius);cursor:pointer;font-size:.84rem;margin-bottom:3px;display:flex;justify-content:space-between;align-items:center;transition:all .1s}
.session-item:hover{background:var(--hover)}
.session-item.active{background:#000;color:#fff}
.session-item .del{opacity:0;font-size:.7rem;cursor:pointer;padding:2px 6px;border-radius:4px;flex-shrink:0}
.session-item:hover .del{opacity:.5}
.session-item:hover .del:hover{opacity:1;background:rgba(0,0,0,.1)}
.session-item.active .del:hover{background:rgba(255,255,255,.2)}
.chat-main{flex:1;display:flex;flex-direction:column;min-width:0}
.chat-messages{flex:1;overflow-y:auto;padding:24px;display:flex;flex-direction:column;gap:16px}
.msg{max-width:75%;padding:12px 16px;border-radius:14px;font-size:.9rem;line-height:1.6;white-space:pre-wrap;word-break:break-word}
.msg-user{align-self:flex-end;background:#000;color:#fff;border-bottom-right-radius:4px}
.msg-assistant{align-self:flex-start;background:var(--card);border:1px solid var(--border);border-bottom-left-radius:4px}
.msg-assistant pre{background:#f5f5f5;padding:12px;border-radius:8px;overflow-x:auto;margin:8px 0;font-size:.8rem}
.msg-assistant code{font-family:'Courier New',monospace;font-size:.85em}
.chat-empty{flex:1;display:flex;align-items:center;justify-content:center;flex-direction:column;color:var(--muted)}
.chat-empty .logo{font-size:5rem;margin-bottom:12px}
.chat-empty p{font-size:.9rem}
.chat-input-bar{padding:16px 24px;border-top:1px solid var(--border);display:flex;gap:10px;align-items:end;background:var(--bg)}
.chat-input-bar textarea{flex:1;resize:none;min-height:44px;max-height:120px;padding:10px 14px;border-radius:12px;font-size:.9rem}
.chat-input-bar .send-btn{width:44px;height:44px;border-radius:12px;background:#000;color:#fff;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:background .15s}
.chat-input-bar .send-btn:hover{background:#222}
.chat-model-bar{padding:8px 24px;border-top:1px solid var(--border);display:flex;align-items:center;gap:12px;font-size:.8rem;color:var(--muted);background:var(--card)}
.chat-model-bar select{width:auto;padding:4px 8px;font-size:.8rem;border-radius:6px}
.chat-context{margin-left:auto;display:flex;align-items:center;gap:8px;padding:4px 8px;border:1px solid var(--border);border-radius:999px;background:#fff}
.chat-context svg{width:30px;height:30px;transform:rotate(-90deg);display:block}
.ctx-track{fill:none;stroke:#e8e8e8;stroke-width:3}
.ctx-progress{fill:none;stroke:#111;stroke-width:3;stroke-linecap:round;stroke-dasharray:100.53;stroke-dashoffset:100.53;transition:stroke-dashoffset .2s ease,stroke .2s ease}
.ctx-progress.warn{stroke:#444}
.ctx-progress.danger{stroke:#000}
.chat-context-text{display:flex;flex-direction:column;line-height:1.05}
.chat-context-text strong{font-size:.72rem;font-family:'Courier New',monospace;color:#111}
.chat-context-text span{font-size:.64rem;color:#666}
#chat-status{min-width:90px;text-align:right}
.typing-indicator span{display:inline-block;width:6px;height:6px;background:#999;border-radius:50%;margin:0 2px;animation:blink 1.4s infinite both}
.typing-indicator span:nth-child(2){animation-delay:.2s}
.typing-indicator span:nth-child(3){animation-delay:.4s}
@keyframes blink{0%,80%,100%{opacity:.3}40%{opacity:1}}

/* ═══════════════════════════════════════════════════════════
   COPYCHECK + KNOWLEDGE BASE
   ═══════════════════════════════════════════════════════════ */
.copycheck-page{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.copycheck-card{padding:18px;border:1px solid var(--border);border-radius:var(--radius);background:var(--card)}
.copycheck-form .field{margin-bottom:12px}
.copycheck-form textarea{width:100%;resize:vertical;min-height:54px}
.copycheck-grid2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.copycheck-actions{display:flex;justify-content:flex-end}
.copycheck-summary{padding:10px 12px;border:1px solid var(--border);border-radius:10px;background:#fafafa;margin:10px 0 12px}
.copycheck-pages details{border:1px solid var(--border);border-radius:8px;padding:8px 10px;margin-bottom:8px;background:#fff}
.copycheck-pages summary{cursor:pointer;font-weight:600}
.copycheck-pages pre{white-space:pre-wrap;word-break:break-word;margin-top:8px;background:#f8f8f8;border-radius:8px;padding:10px;font-size:.8rem;max-height:180px;overflow:auto}
.stack-form .field{margin-bottom:12px}
.stack-form textarea{width:100%;resize:vertical}

/* ═══════════════════════════════════════════════════════════
   SETTINGS
   ═══════════════════════════════════════════════════════════ */
.settings-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(340px,1fr));gap:20px}
.settings-card{padding:24px;border:1px solid var(--border);border-radius:var(--radius);background:var(--card)}
.settings-card h3{font-size:.9rem;font-weight:700;margin-bottom:16px;padding-bottom:10px;border-bottom:1px solid var(--border)}
.settings-card .field{margin-bottom:14px}
.settings-card .field label{display:block;font-size:.72rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);margin-bottom:4px}
.settings-card .field input{width:100%;padding:8px 12px}

/* MODAL */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.45);display:flex;align-items:center;justify-content:center;z-index:100;padding:20px;backdrop-filter:blur(2px)}
.modal{background:var(--bg);border-radius:14px;padding:32px;width:100%;max-width:480px;box-shadow:0 12px 40px rgba(0,0,0,.18);max-height:90vh;overflow-y:auto}
.modal h3{font-size:1rem;font-weight:700;margin-bottom:20px}
.modal .field{margin-bottom:14px}
.modal .field label{display:block;font-size:.78rem;font-weight:600;margin-bottom:4px;color:var(--muted)}
.modal .field input,.modal .field select{padding:8px 12px}
.modal-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:20px}

/* ═══════════════════════════════════════════════════════════
   RESPONSIVE — Truly mobile friendly
   ═══════════════════════════════════════════════════════════ */

/* Tablet */
@media(max-width:1024px){
  .stats-4{grid-template-columns:repeat(2,1fr)}
  .stats-3{grid-template-columns:repeat(2,1fr)}
  .charts-row{flex-direction:column}
  .charts-row .flex-2,.charts-row .flex-1{flex:none;width:100%}
  .top-user-info{width:90px}
}

/* Mobile */
@media(max-width:768px){
  .sidebar{display:none;position:fixed;top:0;left:0;bottom:0;z-index:50;box-shadow:4px 0 20px rgba(0,0,0,.15)}
  .shell.sidebar-open .sidebar{display:flex}
  .sidebar-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.3);z-index:49}
  .shell.sidebar-open .sidebar-overlay{display:block}
  .menu-btn{display:flex!important}
  .chat-sessions{display:none}
  .stats-4,.stats-3{grid-template-columns:repeat(2,1fr)}
  .msg{max-width:90%}
  .settings-cards{grid-template-columns:1fr}
  .admin-tabs{overflow-x:auto;-webkit-overflow-scrolling:touch}
  .admin-tab{padding:8px 14px;font-size:.78rem}
  .admin-tab span{display:none}
  .auth-card{padding:32px 20px}
  .page{padding:16px}
  .topbar{padding:12px 16px}
  .topbar h1{font-size:.95rem}
  .dash-greeting{flex-direction:column}
  .dash-greeting-api{text-align:left}
  .models-grid{grid-template-columns:1fr}
  .models-grid-admin{grid-template-columns:1fr}
  .heatmap-container{overflow-x:auto;padding-bottom:8px}
  .quota-rings{gap:16px}
  .ring-wrap{width:100px;height:100px}
  .chat-input-bar{padding:12px 16px}
  .chat-messages{padding:16px}
   .chat-context-text span{display:none}
   #chat-status{min-width:64px}
   .copycheck-page{grid-template-columns:1fr}
   .copycheck-grid2{grid-template-columns:1fr}
  .modal{padding:24px 20px;margin:16px}
  .top-user-info{width:80px}
  .data-table{font-size:.75rem}
  .data-table th,.data-table td{padding:8px}
}

/* Small phones */
@media(max-width:480px){
  .stats-4,.stats-3{grid-template-columns:1fr}
  .stat-card{padding:14px}
  .stat-body .value{font-size:1.3rem}
  .auth-card{padding:24px 16px}
  .auth-card .logo{font-size:3rem}
  .admin-tab{padding:8px 10px}
  .chart-card{padding:14px}
  .settings-cards{grid-template-columns:1fr}
  .quota-rings{flex-direction:column;align-items:center}
  .action-btns{gap:4px}
  .top-user-row{gap:8px}
  .top-user-info{width:60px}
}

/* ── Utility ──────────────────────────────────────────── */
@media(min-width:769px){
  .menu-btn{display:none!important}
}