:root {
  --bg: #0b1120;
  --surface: #151f32;
  --surface2: #1c2a42;
  --border: #2a3a58;
  --primary: #6366f1;
  --primary-dim: rgba(99,102,241,0.12);
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #38bdf8;
  --text: #e8edf5;
  --text-muted: #7b8fb5;
  --text-faint: #8b9bb4;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 2px 12px rgba(0,0,0,0.4);
  --font: 'Inter', system-ui, sans-serif;
  --sidebar-w: 230px;
}
*{box-sizing:border-box;margin:0;padding:0;}
body{background:var(--bg);color:var(--text);font-family:var(--font);min-height:100vh;display:flex;font-size:14px;line-height:1.5;overflow-x:hidden;}
.sidebar {
  width: var(--sidebar-w);
  background: color-mix(in srgb, var(--surface) 85%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  height: 100dvh;
  z-index: 300;
  transition: transform .25s;
}
.logo{padding:18px 20px 16px;border-bottom:1px solid var(--border);}
.logo-title{font-size:18px;font-weight:700;color:var(--primary);letter-spacing:-.3px;}
.logo-sub{font-size:11px;color:var(--text-muted);margin-top:1px;}
.nav {
  flex: 1;
  overflow-y: auto;
  padding: 8px 0;
  min-height: 0;
}
.nav-group-label{font-size:10px;font-weight:600;letter-spacing:.08em;color:var(--text-faint);padding:10px 18px 4px;text-transform:uppercase;}
.nav-item{display:flex;align-items:center;gap:9px;padding:8px 18px;cursor:pointer;color:var(--text-muted);border-left:3px solid transparent;transition:all .12s;font-size:13.5px;user-select:none;}
.nav-item:hover{color:var(--text);background:rgba(255,255,255,0.03);}
.nav-item.active{color:var(--primary);border-left-color:var(--primary);background:var(--primary-dim);}
.nav-icon{width:18px;text-align:center;font-size:15px;}
.sidebar-bottom{padding:12px 16px;border-top:1px solid var(--border);}
.main{margin-left:var(--sidebar-w);flex:1;padding:28px 32px;max-width:1140px;min-width:0;width:100%;}
.page-title{font-size:22px;font-weight:700;margin-bottom:6px;letter-spacing:-.3px;}
.page-sub{color:var(--text-muted);font-size:13px;margin-bottom:24px;}
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
.grid-4 { display: grid; grid-template-columns: 1fr 1fr 1fr 1fr; gap: 16px; }
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;}
.card-sm{padding:14px 16px;}
.card-title{font-size:14px;font-weight:600;margin-bottom:14px;}
.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px 20px;}
.stat-value{font-size:28px;font-weight:700;margin:4px 0;}
.stat-label{font-size:12px;color:var(--text-muted);}
.stat-icon{font-size:22px;margin-bottom:6px;}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:38px;padding:8px 16px;border-radius:8px;border:none;cursor:pointer;font-size:13.5px;font-weight:500;transition:all .12s;font-family:var(--font);}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:#4f46e5;}
.btn-ghost{background:transparent;color:var(--text-muted);border:1px solid var(--border);}
.btn-ghost:hover{color:var(--text);border-color:var(--text-faint);}
.btn-danger{background:var(--danger);color:#fff;}
.btn-success{background:var(--success);color:#fff;}
.btn-warning{background:var(--warning);color:#000;}
.btn-sm{min-height:34px;padding:5px 12px;font-size:12.5px;}
.btn-xs{min-height:30px;padding:3px 9px;font-size:12px;}
.btn:disabled{opacity:.45;cursor:not-allowed;}
.form-group{margin-bottom:14px;}
label{display:block;font-size:12.5px;color:var(--text-muted);margin-bottom:5px;font-weight:500;}
input,textarea,select{background:var(--surface2);border:1px solid var(--border);border-radius:8px;color:var(--text);padding:9px 12px;font-size:13.5px;width:100%;outline:none;transition:border .12s;font-family:var(--font);}
input:focus,textarea:focus,select:focus{border-color:var(--primary);}
textarea{resize:vertical;min-height:80px;}
select option{background:var(--surface2);}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.form-row-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px;}
.badge{display:inline-block;padding:2px 8px;border-radius:20px;font-size:11px;font-weight:600;}
.badge-primary{background:var(--primary-dim);color:var(--primary);}
.badge-success{background:rgba(34,197,94,.12);color:var(--success);}
.badge-warning{background:rgba(245,158,11,.12);color:var(--warning);}
.badge-danger{background:rgba(239,68,68,.12);color:var(--danger);}
.badge-muted{background:var(--surface2);color:var(--text-muted);}
.table-wrap{overflow-x:auto;}
table{width:100%;border-collapse:collapse;}
th{text-align:left;font-size:12px;font-weight:600;color:var(--text-muted);letter-spacing:.04em;padding:8px 12px;border-bottom:1px solid var(--border);text-transform:uppercase;}
td{padding:10px 12px;border-bottom:1px solid var(--border);font-size:13.5px;vertical-align:middle;}
tr:last-child td{border-bottom:none;}
tr:hover td{background:rgba(255,255,255,0.02);}
.chat-wrap{display:flex;flex-direction:column;height:460px;}
.chat-messages{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:12px;}
.msg{max-width:78%;padding:10px 14px;border-radius:12px;font-size:13.5px;line-height:1.6;white-space:pre-wrap;}
.msg-user{align-self:flex-end;background:var(--primary);color:#fff;border-bottom-right-radius:4px;}
.msg-ai{align-self:flex-start;background:var(--surface2);border:1px solid var(--border);border-bottom-left-radius:4px;}
.msg-system{align-self:center;background:transparent;color:var(--text-muted);font-size:12px;font-style:italic;}
.chat-input-row{padding:12px;border-top:1px solid var(--border);}
.star{font-size:20px;cursor:pointer;color:var(--border);transition:color .1s;}
.star.lit{color:var(--warning);}
.upload-zone{border:2px dashed var(--border);border-radius:var(--radius);padding:40px 20px;text-align:center;cursor:pointer;transition:all .15s;background:var(--surface2);}
.upload-zone:hover{border-color:var(--primary);background:var(--primary-dim);}
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.65);z-index:1000;display:flex;align-items:center;justify-content:center;padding:20px;}
.modal{background:var(--surface);border:1px solid var(--border);border-radius:14px;width:100%;max-width:560px;max-height:85vh;overflow-y:auto;padding:24px;box-shadow:var(--shadow);}
.modal-title{font-size:17px;font-weight:700;margin-bottom:18px;}
.modal-footer{display:flex;justify-content:flex-end;gap:8px;margin-top:20px;padding-top:16px;border-top:1px solid var(--border);}
.highlight-box{background:var(--primary-dim);border:1px solid rgba(99,102,241,.25);border-radius:var(--radius);padding:14px 16px;margin-bottom:14px;}
.divider{height:1px;background:var(--border);margin:16px 0;}
.empty-state{text-align:center;padding:48px 20px;color:var(--text-muted);}
.empty-icon{font-size:36px;margin-bottom:10px;}
.spinner{width:20px;height:20px;border:2px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear infinite;display:inline-block;}
@keyframes spin{to{transform:rotate(360deg);}}
#toast-container{position:fixed;bottom:20px;right:20px;z-index:9999;display:flex;flex-direction:column;gap:8px;}
.toast{padding:11px 18px;border-radius:9px;font-size:13.5px;font-weight:500;box-shadow:var(--shadow);animation:slideIn .25s ease;max-width:320px;}
.toast-success{background:#15512a;border:1px solid var(--success);color:#86efac;}
.toast-error{background:#4a1010;border:1px solid var(--danger);color:#fca5a5;}
.toast-info{background:#0a3a52;border:1px solid var(--info);color:#7dd3fc;}
@keyframes slideIn{from{transform:translateX(40px);opacity:0;}to{transform:translateX(0);opacity:1;}}
.text-muted{color:var(--text-muted);}
.text-success{color:var(--success);}
.text-danger{color:var(--danger);}
.text-warning{color:var(--warning);}
.text-primary{color:var(--primary);}
.bp-high{color:var(--danger);}
.bp-ok{color:var(--success);}
.pill{display:inline-block;padding:2px 10px;border-radius:20px;font-size:12px;background:var(--surface2);}
.hamburger{display:none;position:fixed;top:14px;left:14px;z-index:300;background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:7px 9px;cursor:pointer;font-size:18px;}
.flex{display:flex;}.gap-2{gap:8px;}.items-center{align-items:center;}.justify-between{justify-content:space-between;}.flex-1{flex:1;}
.mobile-stack{display:flex;align-items:center;gap:12px;}
.mobile-toolbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;gap:12px;}
.chip-check{display:flex;align-items:center;gap:6px;cursor:pointer;margin:0;color:var(--text);font-size:13px;background:var(--surface2);border:1px solid var(--border);border-radius:999px;padding:8px 10px;}
.chip-check input{width:auto;min-height:0;}
.mobile-list-card{border:1px solid var(--border);border-radius:8px;background:var(--surface2);padding:12px;margin-bottom:10px;}
.mb-2{margin-bottom:8px;}.mb-3{margin-bottom:12px;}.mb-4{margin-bottom:16px;}.mb-5{margin-bottom:20px;}
.mt-2{margin-top:8px;}.mt-3{margin-top:12px;}.mt-4{margin-top:16px;}
.w-full{width:100%;}
[x-cloak] { display: none !important; }
.login-overlay{position:fixed;inset:0;background:var(--bg);display:flex;align-items:center;justify-content:center;z-index:9999;}
.login-box{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:2rem;width:320px;box-shadow:var(--shadow);}

.rehab-summary{display:flex;justify-content:space-between;align-items:center;gap:16px;background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:18px 20px;}
.rehab-kicker{font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--text-faint);font-weight:700;margin-bottom:4px;}
.rehab-summary-title{font-size:17px;font-weight:700;margin-bottom:4px;}
.rehab-summary-text{font-size:13px;color:var(--text-muted);max-width:720px;}
.rehab-tabs{display:flex;gap:8px;flex-wrap:wrap;}
.rehab-list{display:flex;flex-direction:column;gap:12px;}
.rehab-card{background:var(--surface);border:1px solid var(--border);border-radius:8px;overflow:hidden;}
.rehab-card.is-paused{opacity:.68;}
.rehab-card-head{width:100%;display:flex;align-items:center;gap:14px;text-align:left;background:transparent;border:0;color:var(--text);padding:14px;cursor:pointer;font-family:var(--font);}
.rehab-card-head:hover{background:rgba(255,255,255,0.03);}
.rehab-card-main{flex:1;min-width:0;}
.rehab-card-meta{display:flex;gap:8px;flex-wrap:wrap;font-size:11.5px;color:var(--text-faint);margin-bottom:3px;}
.rehab-card-title{font-size:15px;font-weight:700;line-height:1.3;}
.rehab-card-sub{font-size:12.5px;color:var(--text-muted);margin-top:3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.rehab-card-state{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.rehab-chevron{font-size:24px;line-height:1;color:var(--text-muted);width:18px;text-align:center;}
.rehab-card-body{border-top:1px solid var(--border);padding:16px;}
.rehab-copy{font-size:13.5px;color:var(--text);line-height:1.6;background:var(--surface2);border:1px solid var(--border);border-radius:8px;padding:12px;min-height:74px;}
.rehab-log{background:color-mix(in srgb, var(--surface2) 72%, transparent);border:1px solid var(--border);border-radius:8px;padding:14px;}
.rehab-actions{display:flex;gap:8px;flex-wrap:wrap;}
.rehab-session-row{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:10px 0;border-bottom:1px solid var(--border);}
.rehab-session-row:last-child{border-bottom:0;}
.rehab-figure{position:relative;width:78px;height:72px;flex:0 0 78px;border:1px solid var(--border);border-radius:8px;background:linear-gradient(180deg,var(--surface2),var(--surface));overflow:hidden;}
.rehab-figure span{position:absolute;display:block;}
.figure-head{width:16px;height:16px;border:2px solid var(--info);border-radius:50%;left:31px;top:10px;background:var(--surface);}
.figure-body{width:3px;height:24px;background:var(--info);left:38px;top:27px;border-radius:3px;}
.figure-arm{width:24px;height:3px;background:var(--info);top:35px;border-radius:3px;}
.figure-arm.left{left:17px;transform:rotate(-18deg);}
.figure-arm.right{left:38px;transform:rotate(18deg);}
.figure-leg{width:24px;height:3px;background:var(--info);top:55px;border-radius:3px;}
.figure-leg.left{left:20px;transform:rotate(35deg);}
.figure-leg.right{left:36px;transform:rotate(-35deg);}
.figure-target{right:8px;top:9px;width:18px;height:18px;border:1px solid var(--warning);border-radius:4px;color:var(--warning);font-size:11px;font-weight:700;text-align:center;line-height:16px;}
.figure-screen{display:none;right:7px;top:10px;width:25px;height:30px;border:2px solid var(--warning);border-radius:3px;}
.figure-bike{display:none;left:12px;bottom:9px;width:52px;height:22px;border-bottom:3px solid var(--success);}
.rehab-figure-neck-nod .figure-head{transform:translateY(4px) rotate(12deg);}
.rehab-figure-vor-card .figure-target{right:4px;top:25px;width:22px;height:22px;line-height:20px;}
.rehab-figure-swivel:after,.rehab-figure-torso-turn:after{content:"";position:absolute;left:18px;bottom:8px;width:42px;height:10px;border-bottom:2px solid var(--warning);border-radius:50%;}
.rehab-figure-core-brace:after{content:"";position:absolute;left:25px;top:37px;width:28px;height:12px;border:2px solid var(--warning);border-radius:999px;}
.rehab-figure-knee-extension .figure-leg.left{left:36px;width:30px;transform:rotate(0deg);background:var(--warning);}
.rehab-figure-foot-texture:before{content:"";position:absolute;left:8px;bottom:4px;width:28px;height:8px;background:repeating-linear-gradient(90deg,var(--success),var(--success) 3px,transparent 3px,transparent 6px);}
.rehab-figure-foot-texture:after{content:"";position:absolute;right:8px;bottom:4px;width:28px;height:8px;background:repeating-linear-gradient(45deg,var(--warning),var(--warning) 3px,transparent 3px,transparent 6px);}
.rehab-figure-screen .figure-screen{display:block;}
.rehab-figure-screen .figure-target{display:none;}
.rehab-figure-breath:after{content:"";position:absolute;left:23px;top:38px;width:34px;height:18px;border:2px solid var(--success);border-top:0;border-radius:0 0 20px 20px;}
.rehab-figure-bike .figure-bike{display:block;}
.rehab-figure-bike .figure-leg.left{transform:rotate(8deg);background:var(--success);}
.nutrition-summary{display:flex;justify-content:space-between;align-items:center;gap:16px;background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:18px 20px;}
.nutrition-list{display:flex;flex-direction:column;gap:12px;}
.nutrition-card{background:var(--surface);border:1px solid var(--border);border-radius:8px;overflow:hidden;}
.nutrition-card.is-paused{opacity:.68;}
.nutrition-card-head{width:100%;display:flex;align-items:center;gap:14px;text-align:left;background:transparent;border:0;color:var(--text);padding:14px;cursor:pointer;font-family:var(--font);}
.nutrition-card-head:hover{background:rgba(255,255,255,0.03);}
.nutrition-card-main{flex:1;min-width:0;}
.nutrition-icon{width:52px;height:52px;flex:0 0 52px;border-radius:8px;border:1px solid var(--border);background:var(--surface2);display:flex;align-items:center;justify-content:center;color:var(--primary);font-weight:800;font-size:15px;}

/* ── LIGHT THEME ── */
body.light {
  --bg: #f0f4f8;
  --surface: #ffffff;
  --surface2: #e8edf5;
  --border: #d0d9e8;
  --text: #1a2540;
  --text-muted: #5a6a8a;
  --text-faint: #9aabc5;
  --shadow: 0 2px 12px rgba(0,0,0,0.1);
}

/* ── MOBILE ── */
.mobile-only{ display:none; }
.mobile-footer{ display:none; }
.sidebar-overlay{ display:none; }
@media(max-width:768px){
  .hamburger{ display:none; }
  .sidebar{ overflow-y: auto; -webkit-overflow-scrolling: touch; }
  .sidebar{ transform:translateX(-100%); }
  .sidebar.open{ transform:translateX(0); }
  .main{ margin-left:0; padding:12px; padding-top:18px; padding-bottom:88px; max-width:none; }
  .grid-2,.grid-3{ grid-template-columns:1fr; }
  .grid-4{ grid-template-columns:1fr 1fr; }
  .form-row{ grid-template-columns:1fr; }
  .form-row-3{ grid-template-columns:1fr; }
  .card{ padding:16px; border-radius:8px; }
  .stat-card{ padding:12px 14px; }
  .stat-value{ font-size:22px; }
  .btn{ min-height:44px; }
  .btn-sm{ min-height:40px; }
  .btn-xs{ min-height:34px; }
  input,textarea,select{ font-size:16px; min-height:44px; }
  textarea{ min-height:96px; }
  .chat-wrap{ height:calc(100dvh - 250px); min-height:360px; max-height:620px; }
  .chat-messages{ padding:12px; }
  .msg{ max-width:92%; }
  .chat-input-row{ padding:10px; }
  .table-wrap{ margin:0 -16px; padding:0 16px; }
  table{ min-width:620px; }
  .modal-overlay{ align-items:flex-end; padding:0; }
  .modal{ max-width:none; max-height:calc(100dvh - 18px); border-radius:14px 14px 0 0; padding:18px 16px; }
  .modal-footer{ position:sticky; bottom:-18px; background:var(--surface); margin-left:-16px; margin-right:-16px; margin-bottom:-18px; padding:12px 16px max(12px, env(safe-area-inset-bottom)); }
  .modal-footer .btn{ flex:1; }
  .login-box{ width:min(100% - 32px, 360px); padding:1.35rem; }
  .page-title{ font-size:20px; line-height:1.25; }
  .page-sub{ margin-bottom:16px; }
  .mobile-stack{ align-items:stretch; flex-direction:column; gap:8px; }
  .mobile-toolbar{ align-items:stretch; flex-direction:column; }
  .mobile-toolbar .btn{ width:100%; }
  .chip-check{ min-height:44px; padding:10px 12px; }
  .chip-check input{ min-height:0; }
  .upload-zone{ padding:28px 16px; }
  .rehab-summary{ align-items:stretch; flex-direction:column; padding:16px; }
  .rehab-summary .btn{ width:100%; }
  .nutrition-summary{ align-items:stretch; flex-direction:column; padding:16px; }
  .nutrition-summary .btn{ width:100%; }
  .rehab-tabs{ overflow-x:auto; flex-wrap:nowrap; padding-bottom:4px; }
  .rehab-tabs .btn{ flex:0 0 auto; }
  .nutrition-card-head{ align-items:flex-start; padding:12px; gap:10px; }
  .nutrition-icon{ width:44px; height:44px; flex-basis:44px; }
  .rehab-card-head{ align-items:flex-start; padding:12px; gap:10px; }
  .rehab-figure{ width:64px; height:62px; flex-basis:64px; }
  .rehab-card-state{ flex-direction:column; align-items:flex-end; gap:4px; }
  .rehab-card-sub{ white-space:normal; }
  .rehab-card-body{ padding:12px; }
  .rehab-actions .btn{ flex:1; }
  .rehab-session-row{ align-items:flex-start; flex-direction:column; }
  #toast-container{ left:12px; right:12px; bottom:88px; }
  .toast{ max-width:none; }
  .desktop-only{ display:none; }
  .mobile-only{ display:block; }
  .sidebar{
    padding-bottom:env(safe-area-inset-bottom, 20px);
  }
  body.sidebar-open{ overflow:hidden; }
  .sidebar-overlay{
    display:block;
    position:fixed;inset:0;
    background:rgba(0,0,0,0.5);
    z-index:299;
  }
.mobile-footer {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: color-mix(in srgb, var(--surface) 85%, transparent);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-top: 1px solid var(--border);
    z-index: 200;
    padding: 6px 0;
    padding-bottom: max(env(safe-area-inset-bottom), 12px);
  }
  .footer-btn{
    flex:1;display:flex;flex-direction:column;align-items:center;
    gap:2px;background:none;border:none;cursor:pointer;
    color:var(--text-muted);padding:4px 0;
  }
  .footer-btn.active{ color:var(--primary); }
  .footer-btn:active{ color:var(--primary); }
  .footer-icon{ font-size:20px; }
  .footer-label{ font-size:10px;font-weight:500; }
  .sidebar-bottom{ display:block; }
}

@media(max-width:480px){
  .grid-4{ gap:10px; }
  .stat-card{ padding:10px; }
  .stat-icon{ font-size:18px; margin-bottom:2px; }
  .stat-value{ font-size:20px; }
  .stat-label{ font-size:11px; line-height:1.25; }
}
.nav-item, .btn, .footer-btn {
  transition: background 0.15s ease, transform 0.1s ease, color 0.15s ease;
}

.btn:active, .footer-btn:active, .nav-item:active {
  transform: scale(0.96);
}

.btn:focus-visible, .input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.input:focus, textarea:focus, select:focus {
  border-color: var(--primary);
  outline: none;
}