/* 
   DESIGN TOKENS --- idnticos a la demo v4
 */
:root{
  --teal:#3DBFB8;--teal-dark:#2A9E97;--teal-light:#E8F8F7;--teal-mid:#B2E8E6;
  --orange:#F5A623;--orange-dark:#D4891A;--orange-light:#FEF3E2;
  --dark:#1C4A48;--dark2:#2C5F5D;
  --text:#2C3E50;--muted:#7F8C8D;
  --bg:#F4FAFA;--white:#FFFFFF;--border:#D5ECEB;
  --red:#E74C3C;--green:#27AE60;
  --font:'Nunito',sans-serif;
  --radius:12px;--radius-sm:8px;
  --shadow:0 2px 12px rgba(61,191,184,.1);
  --shadow-md:0 4px 24px rgba(28,74,72,.14);
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:var(--font);background:var(--bg);color:var(--text);min-height:100vh;font-size:14px;-webkit-font-smoothing:antialiased}

/*  Scrollbar  */
::-webkit-scrollbar{width:5px;height:5px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--teal-mid);border-radius:4px}

/*  Animaciones globales  */
@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
@keyframes slideIn{from{opacity:0;transform:translateX(-12px)}to{opacity:1;transform:translateX(0)}}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes scaleIn{from{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}
@keyframes shimmer{0%{background-position:-200px 0}100%{background-position:200px 0}}

.fade-in{animation:fadeIn .3s ease both}
.slide-in{animation:slideIn .25s ease both}

/* 
   LAYOUT
 */
.app{display:flex;height:100vh;overflow:hidden}
#loading-screen{position:fixed;inset:0;background:var(--dark);display:flex;flex-direction:column;align-items:center;justify-content:center;z-index:999;transition:opacity .4s}
#loading-screen.hide{opacity:0;pointer-events:none}
.loading-logo{font-size:32px;font-weight:900;color:#fff;margin-bottom:16px}
.loading-logo span{color:var(--orange)}
.loading-bar{width:200px;height:3px;background:rgba(255,255,255,.15);border-radius:2px;overflow:hidden}
.loading-bar-fill{height:100%;background:var(--teal);border-radius:2px;animation:shimmer 1.2s infinite;background-size:400px;background-image:linear-gradient(90deg,var(--teal) 0%,#7eeae6 50%,var(--teal) 100%)}

/* 
   SIDEBAR
 */
.sidebar{width:224px;background:var(--dark);display:flex;flex-direction:column;flex-shrink:0;transition:width .3s ease}
.logo-area{padding:18px 16px 14px;border-bottom:1px solid rgba(255,255,255,.08)}
.logo-text{color:#fff;font-size:21px;font-weight:900;letter-spacing:-.5px;line-height:1}
.logo-text span{color:var(--orange)}
.logo-sub{color:rgba(255,255,255,.35);font-size:10px;letter-spacing:1.5px;text-transform:uppercase;margin-top:3px}

.suc-switch{margin:10px 12px 4px;border:1.5px solid rgba(255,255,255,.15);border-radius:8px;overflow:hidden;display:flex}
.suc-btn{flex:1;padding:6px 4px;font-size:11px;font-weight:700;font-family:var(--font);border:none;cursor:pointer;transition:.2s;color:rgba(255,255,255,.45);background:transparent;letter-spacing:.3px}
.suc-btn.active{background:var(--teal);color:#fff}
.suc-btn:hover:not(.active){color:#fff;background:rgba(255,255,255,.08)}

.nav{flex:1;padding:8px 0;overflow-y:auto}
.nav-section{padding:10px 16px 4px;font-size:9px;color:rgba(255,255,255,.25);letter-spacing:1.5px;text-transform:uppercase;font-weight:800}
.nav-item{display:flex;align-items:center;gap:10px;padding:9px 16px;cursor:pointer;color:rgba(255,255,255,.6);font-size:13px;font-weight:600;transition:.15s;border-left:3px solid transparent;position:relative}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-item.active{background:rgba(61,191,184,.12);color:var(--teal);border-left-color:var(--teal)}
.nav-item i{font-size:17px;width:20px;text-align:center;flex-shrink:0}
.nav-badge{margin-left:auto;background:var(--orange);color:#fff;font-size:10px;font-weight:800;padding:1px 7px;border-radius:20px;animation:pulse 2s infinite}

.sidebar-footer{padding:12px 16px;border-top:1px solid rgba(255,255,255,.08)}
.user-badge{display:flex;align-items:center;gap:10px}
.user-avatar{width:34px;height:34px;border-radius:50%;background:linear-gradient(135deg,var(--teal),var(--teal-dark));display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:13px;flex-shrink:0}
.user-info p{font-size:12px;color:#fff;font-weight:700;line-height:1.3}
.user-info small{font-size:10px;color:rgba(255,255,255,.4)}
.logout-btn{margin-left:auto;background:none;border:none;color:rgba(255,255,255,.35);cursor:pointer;font-size:17px;padding:4px;transition:.15s}
.logout-btn:hover{color:var(--red)}

/* 
   MAIN
 */
.main{flex:1;display:flex;flex-direction:column;overflow:hidden}
.topbar{background:var(--white);border-bottom:1px solid var(--border);padding:0 24px;height:56px;display:flex;align-items:center;justify-content:space-between;flex-shrink:0;box-shadow:0 1px 0 var(--border)}
.topbar-title{font-size:17px;font-weight:800;color:var(--dark)}
.topbar-right{display:flex;align-items:center;gap:10px}
.badge-pill{background:var(--orange-light);color:var(--orange-dark);font-size:11px;font-weight:700;padding:4px 11px;border-radius:20px;cursor:pointer;display:flex;align-items:center;gap:4px;transition:.15s}
.badge-pill:hover{background:var(--orange);color:#fff}
.badge-teal{background:var(--teal-light);color:var(--teal-dark);font-size:11px;font-weight:700;padding:4px 11px;border-radius:20px;display:flex;align-items:center;gap:4px}
.badge-suc{font-size:11px;font-weight:800;padding:4px 12px;border-radius:20px;display:flex;align-items:center;gap:5px}
.caja-topbar{display:flex;gap:16px;align-items:center;background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:6px 14px}
.caja-topbar-item{text-align:center}
.caja-topbar-label{font-size:9px;color:var(--muted);font-weight:700;text-transform:uppercase;letter-spacing:.5px}
.caja-topbar-val{font-size:13px;font-weight:800;line-height:1}

.content{flex:1;overflow-y:auto;padding:20px 24px}
.page{animation:fadeIn .3s ease}

/* 
   BOTONES
 */
.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:var(--radius-sm);border:none;cursor:pointer;font-size:13px;font-weight:700;font-family:var(--font);transition:.15s;white-space:nowrap}
.btn:active{transform:scale(.97)}
.btn-primary{background:var(--teal);color:#fff}
.btn-primary:hover{background:var(--teal-dark)}
.btn-orange{background:var(--orange);color:#fff}
.btn-orange:hover{background:var(--orange-dark)}
.btn-outline{background:#fff;color:var(--teal);border:1.5px solid var(--teal)}
.btn-outline:hover{background:var(--teal-light)}
.btn-danger{background:var(--red);color:#fff}
.btn-danger:hover{opacity:.85}
.btn-success{background:var(--green);color:#fff}
.btn-success:hover{opacity:.85}
.btn-ghost{background:none;color:var(--muted);border:1px solid var(--border)}
.btn-ghost:hover{background:var(--bg);color:var(--text)}
.btn-sm{padding:5px 12px;font-size:12px}
.btn-lg{padding:11px 22px;font-size:15px}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}

/* 
   CARDS
 */
.card{background:var(--white);border-radius:var(--radius);border:1px solid var(--border);padding:20px;box-shadow:var(--shadow)}
.card-sm{padding:14px 16px}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:20px}
.stat-card{background:var(--white);border-radius:var(--radius);border:1px solid var(--border);padding:18px;box-shadow:var(--shadow);transition:.2s;position:relative;overflow:hidden}
.stat-card::after{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--teal);transform:scaleX(0);transform-origin:left;transition:.3s}
.stat-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.stat-card:hover::after{transform:scaleX(1)}
.stat-label{font-size:11px;color:var(--muted);font-weight:700;text-transform:uppercase;letter-spacing:.5px}
.stat-val{font-size:26px;font-weight:900;color:var(--dark);line-height:1.1;margin:6px 0 3px}
.stat-sub{font-size:11px;color:var(--teal);font-weight:600}
.stat-icon{font-size:28px;color:var(--teal);margin-bottom:8px;display:block}

/* 
   TABLAS
 */
.table-wrap{overflow-x:auto;border-radius:var(--radius-sm);border:1px solid var(--border)}
table{width:100%;border-collapse:collapse;font-size:13px}
th{background:var(--teal-light);color:var(--dark2);font-weight:700;padding:10px 14px;text-align:left;font-size:11px;text-transform:uppercase;letter-spacing:.5px;white-space:nowrap}
td{padding:10px 14px;border-bottom:1px solid var(--border);color:var(--text);vertical-align:middle}
tr:last-child td{border-bottom:none}
tr:hover td{background:#f7fdfd}
.table-empty{text-align:center;padding:40px!important;color:var(--muted)}

.tag{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:20px;font-size:11px;font-weight:700;white-space:nowrap}
.tag-green{background:#E8F8EF;color:#1B6B3A}
.tag-red{background:#FDECEA;color:#B03A2E}
.tag-orange{background:var(--orange-light);color:var(--orange-dark)}
.tag-teal{background:var(--teal-light);color:var(--teal-dark)}
.tag-gray{background:#F2F3F4;color:#5D6D7E}
.tag-purple{background:#F5EEF8;color:#7D3C98}

/* 
   FORMULARIOS
 */
.form-group{margin-bottom:14px}
.form-label{font-size:12px;font-weight:700;color:var(--dark2);margin-bottom:5px;display:flex;align-items:center;gap:4px}
.form-required{color:var(--red)}
.form-control{width:100%;padding:9px 13px;border:1.5px solid var(--border);border-radius:var(--radius-sm);font-size:13px;font-family:var(--font);color:var(--text);background:#fff;transition:.15s}
.form-control:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 3px rgba(61,191,184,.12)}
.form-control:invalid:not(:placeholder-shown){border-color:var(--red)}
select.form-control{cursor:pointer;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%237F8C8D' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:32px}
textarea.form-control{resize:vertical;min-height:72px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-row-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:14px}
.form-hint{font-size:11px;color:var(--muted);margin-top:4px}

/* 
   SECCIN HEADER
 */
.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.section-title{font-size:17px;font-weight:800;color:var(--dark)}
.section-sub{font-size:12px;color:var(--muted);margin-top:2px;font-weight:600}
.section-actions{display:flex;gap:8px;align-items:center}

/* 
   TABS
 */
.tabs{display:flex;gap:4px;background:var(--bg);border-radius:10px;padding:4px;margin-bottom:18px;width:fit-content;border:1px solid var(--border)}
.tab-btn{padding:7px 18px;border-radius:8px;font-size:13px;font-weight:700;cursor:pointer;color:var(--muted);border:none;background:none;font-family:var(--font);transition:.15s}
.tab-btn.active{background:#fff;color:var(--teal);box-shadow:0 1px 4px rgba(0,0,0,.1)}
.tab-btn:hover:not(.active){color:var(--text)}

/* 
   INFO BOXES
 */
.info-box{background:var(--teal-light);border:1px solid var(--teal-mid);border-radius:var(--radius-sm);padding:10px 14px;font-size:12px;color:var(--dark2);display:flex;align-items:flex-start;gap:8px;line-height:1.5}
.warn-box{background:var(--orange-light);border:1px solid rgba(245,166,35,.3);border-radius:var(--radius-sm);padding:10px 14px;font-size:12px;color:var(--dark2);display:flex;align-items:flex-start;gap:8px;line-height:1.5}
.error-box{background:#FDECEA;border:1px solid rgba(231,76,60,.25);border-radius:var(--radius-sm);padding:10px 14px;font-size:12px;color:#B03A2E;display:flex;align-items:flex-start;gap:8px;line-height:1.5}
.alert-row{display:flex;align-items:flex-start;gap:10px;padding:10px 14px;border-radius:var(--radius-sm);background:var(--orange-light);border-left:3px solid var(--orange);margin-bottom:8px}
.alert-row.danger{background:#FDECEA;border-color:var(--red)}
.alert-row i{flex-shrink:0;margin-top:1px}
.alert-text{font-size:12px;font-weight:600;color:var(--dark2)}
.alert-sub{font-size:11px;color:var(--muted);margin-top:2px}
.divider{border:none;border-top:1px solid var(--border);margin:14px 0}

/* 
   LOGIN
 */
#login-screen{position:fixed;inset:0;background:linear-gradient(135deg,var(--dark) 0%,#223f3d 60%,#2A9E97 100%);display:flex;align-items:center;justify-content:center;z-index:100;transition:all .4s}
#login-screen.hide{opacity:0;pointer-events:none}
.login-card{background:#fff;border-radius:20px;padding:40px 36px;width:380px;max-width:95vw;box-shadow:0 32px 80px rgba(0,0,0,.35);animation:scaleIn .4s ease}
.login-logo{text-align:center;margin-bottom:28px}
.login-logo-text{font-size:32px;font-weight:900;color:var(--teal)}
.login-logo-text span{color:var(--orange)}
.login-logo-sub{font-size:11px;color:var(--muted);letter-spacing:2px;text-transform:uppercase;margin-top:4px}
.login-decoration{width:48px;height:3px;background:linear-gradient(90deg,var(--teal),var(--orange));border-radius:2px;margin:12px auto 0}

/* 
   POS --- VENTAS
 */
.pos-wrap{display:grid;grid-template-columns:1fr 370px;gap:16px;height:calc(100vh - 96px)}
.pos-left{display:flex;flex-direction:column;gap:12px;overflow:hidden}
.pos-right{display:flex;flex-direction:column;gap:10px;overflow-y:auto}
.scan-bar{display:flex;gap:8px;align-items:center}
.scan-input{flex:1;padding:11px 16px;border:2px solid var(--teal);border-radius:10px;font-size:14px;font-family:var(--font);background:#fff;transition:.15s}
.scan-input:focus{outline:none;box-shadow:0 0 0 4px rgba(61,191,184,.15)}
.cart-wrap{flex:1;overflow:hidden;display:flex;flex-direction:column}
.cart-list{flex:1;overflow-y:auto;padding:0 4px}
.cart-item{display:flex;align-items:center;gap:10px;padding:10px 0;border-bottom:1px solid var(--border);animation:fadeIn .2s ease}
.cart-item:last-child{border-bottom:none}
.qty-ctrl{display:flex;align-items:center;gap:5px}
.qty-btn{width:28px;height:28px;border-radius:7px;border:1.5px solid var(--border);background:#fff;cursor:pointer;font-size:16px;font-weight:800;display:flex;align-items:center;justify-content:center;color:var(--dark);transition:.15s;flex-shrink:0}
.qty-btn:hover{border-color:var(--teal);color:var(--teal);background:var(--teal-light)}
.qty-num{width:34px;text-align:center;font-weight:800;font-size:14px}
.total-box{background:var(--dark);border-radius:var(--radius);padding:18px}
.total-label{color:rgba(255,255,255,.5);font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.5px}
.total-amount{color:#fff;font-size:32px;font-weight:900;margin:4px 0;line-height:1}
.pay-methods{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:12px}
.pay-btn{padding:11px;border-radius:var(--radius-sm);border:2px solid rgba(255,255,255,.15);background:rgba(255,255,255,.06);color:rgba(255,255,255,.7);cursor:pointer;font-weight:700;font-size:13px;font-family:var(--font);transition:.2s;display:flex;align-items:center;justify-content:center;gap:7px}
.pay-btn:hover,.pay-btn.active{border-color:var(--teal);background:rgba(61,191,184,.18);color:var(--teal)}

/* 
   BSQUEDA DROPDOWN
 */
.search-wrap{position:relative;flex:1}
.search-dropdown{position:absolute;top:calc(100% + 4px);left:0;right:0;background:#fff;border:1.5px solid var(--border);border-radius:10px;box-shadow:var(--shadow-md);z-index:50;max-height:260px;overflow-y:auto;animation:scaleIn .15s ease}
.search-item{padding:10px 14px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--border);transition:.12s}
.search-item:last-child{border-bottom:none}
.search-item:hover{background:var(--teal-light)}
.search-item-name{font-weight:700;font-size:13px;color:var(--dark)}
.search-item-sub{font-size:11px;color:var(--muted);margin-top:1px}
.search-item-price{font-size:13px;font-weight:800;color:var(--teal)}
.search-item-stock{font-size:11px;color:var(--muted);text-align:right;margin-top:1px}

/* 
   MODAL
 */
.modal-overlay{position:fixed;inset:0;background:rgba(28,74,72,.5);display:flex;align-items:center;justify-content:center;z-index:200;backdrop-filter:blur(2px);animation:fadeIn .2s ease}
.modal{background:#fff;border-radius:16px;padding:28px;width:520px;max-width:95vw;max-height:88vh;overflow-y:auto;animation:scaleIn .22s ease;position:relative}
.modal-lg{width:660px}
.modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;padding-bottom:14px;border-bottom:1px solid var(--border)}
.modal-title{font-size:16px;font-weight:800;color:var(--dark);display:flex;align-items:center;gap:8px}
.modal-close{background:none;border:none;font-size:20px;cursor:pointer;color:var(--muted);padding:4px;border-radius:6px;transition:.15s;line-height:1}
.modal-close:hover{color:var(--red);background:var(--bg)}
.modal-footer{display:flex;justify-content:flex-end;gap:10px;margin-top:20px;padding-top:14px;border-top:1px solid var(--border)}

/* 
   TOAST / NOTIFICACIONES
 */
#toast-container{position:fixed;bottom:24px;right:24px;z-index:999;display:flex;flex-direction:column;gap:8px}
.toast{padding:12px 18px;border-radius:10px;font-size:13px;font-weight:600;min-width:260px;max-width:380px;display:flex;align-items:center;gap:10px;animation:fadeIn .3s ease;box-shadow:var(--shadow-md);color:#fff}
.toast-success{background:var(--green)}
.toast-error{background:var(--red)}
.toast-warn{background:var(--orange)}
.toast-info{background:var(--teal-dark)}
.toast.hide{animation:fadeIn .3s ease reverse}

/* 
   LOADING SKELETON
 */
.skeleton{background:linear-gradient(90deg,#f0f9f9 25%,#e0f5f5 50%,#f0f9f9 75%);background-size:400px;animation:shimmer 1.4s infinite;border-radius:6px;height:16px;margin-bottom:8px}

/* 
   CHARTS
 */
.chart-wrap{display:flex;align-items:flex-end;gap:6px;height:100px;padding:0 4px}
.chart-bar-item{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px}
.chart-bar-fill{width:100%;background:var(--teal);border-radius:4px 4px 0 0;min-height:4px;transition:height .5s ease;position:relative;cursor:pointer}
.chart-bar-fill:hover{background:var(--teal-dark)}
.chart-bar-fill::after{content:attr(data-val);position:absolute;bottom:100%;left:50%;transform:translateX(-50%);font-size:9px;font-weight:700;color:var(--dark2);white-space:nowrap;margin-bottom:3px;opacity:0;transition:.2s}
.chart-bar-fill:hover::after{opacity:1}
.chart-bar-label{font-size:10px;color:var(--muted);font-weight:600}

/* 
   DIAS BAR (por vencer)
 */
.dias-bar{height:5px;border-radius:3px;background:var(--border);overflow:hidden;margin-top:4px;width:100px}
.dias-fill{height:100%;border-radius:3px;transition:.3s}

/* 
   UTILIDADES
 */
.flex{display:flex}.items-center{align-items:center}.justify-between{justify-content:space-between}.gap-2{gap:8px}.gap-3{gap:12px}.w-full{width:100%}
.mt-1{margin-top:8px}.mt-2{margin-top:14px}.mt-3{margin-top:22px}.mb-1{margin-bottom:8px}.mb-2{margin-bottom:14px}
.text-right{text-align:right}.text-center{text-align:center}.font-bold{font-weight:700}.font-black{font-weight:900}
.text-muted{color:var(--muted)}.text-teal{color:var(--teal)}.text-orange{color:var(--orange)}.text-red{color:var(--red)}.text-green{color:var(--green)}.text-dark{color:var(--dark)}
.text-sm{font-size:12px}.text-xs{font-size:11px}
.hidden{display:none!important}

/* 
   RESPONSIVE / MOBILE
 */
@media (max-width: 768px) {
  .sidebar { position:fixed;left:-224px;top:0;bottom:0;z-index:300;transition:left .25s ease }
  .sidebar.open { left:0 }
  .main { width:100vw }
  .app { display:block;height:100vh;overflow:hidden }
  .mob-overlay { display:none;position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:299 }
  .mob-overlay.show { display:block }
  .topbar { padding:0 14px }
  .topbar-title { font-size:15px }
  .caja-topbar { display:none }
  .content { padding:14px }
  .stat-grid { grid-template-columns:1fr 1fr!important;gap:10px }
  .pos-wrap { grid-template-columns:1fr;height:auto }
  .pos-right { position:fixed;bottom:0;left:0;right:0;background:#fff;padding:12px;border-top:2px solid var(--border);z-index:50;max-height:60vh;overflow-y:auto }
  .pos-left { padding-bottom:280px }
  .form-row,.form-row-3 { grid-template-columns:1fr!important }
  .modal { width:96vw!important;padding:18px }
  table { font-size:12px }
  th,td { padding:7px 8px }
  #hamburger { display:flex!important }
}
@media (max-width: 480px) {
  .stat-grid { grid-template-columns:1fr!important }
  .stat-val { font-size:20px }
  .btn { padding:7px 12px;font-size:12px }
}
#hamburger { display:none;background:none;border:none;cursor:pointer;padding:6px;color:var(--dark2) }
#hamburger i { font-size:22px }


/* Agregar a tu CSS */
.cart-item-warning {
  border-left: 3px solid var(--orange);
  background: rgba(255, 165, 0, 0.05);
}

.cart-item-error {
  border-left: 3px solid var(--red);
  background: rgba(255, 0, 0, 0.05);
  opacity: 0.7;
}