/* ============================================
   北京往事文化传播有限公司 - 供货管理系统
   ============================================ */

/* Reset & Base */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
    --primary:#2563eb;
    --primary-dark:#1d4ed8;
    --primary-light:#eff6ff;
    --success:#059669;
    --danger:#dc2626;
    --warning:#d97706;
    --bg:#f1f5f9;
    --sidebar-bg:#0f172a;
    --sidebar-text:#94a3b8;
    --sidebar-active:#3b82f6;
    --card-bg:#fff;
    --border:#e2e8f0;
    --text:#0f172a;
    --text-secondary:#64748b;
    --text-muted:#94a3b8;
    --radius:10px;
    --shadow-sm:0 1px 2px rgba(0,0,0,.04);
    --shadow:0 1px 3px rgba(0,0,0,.06),0 1px 2px rgba(0,0,0,.04);
    --shadow-md:0 4px 6px -1px rgba(0,0,0,.06),0 2px 4px -2px rgba(0,0,0,.04);
    --shadow-lg:0 10px 25px -5px rgba(0,0,0,.08),0 4px 10px -6px rgba(0,0,0,.04);
}
body{
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans SC",sans-serif;
    background:var(--bg);color:var(--text);line-height:1.6;
    -webkit-font-smoothing:antialiased;
}

/* ==================== 登录页面 ==================== */
#loginPage{
    display:flex;align-items:center;justify-content:flex-start;
    min-height:100vh;
    background:url('/images/bg.jpg') center/cover no-repeat fixed;
    position:relative;
}
#loginPage::before{
    content:'';position:absolute;top:0;left:0;right:0;bottom:0;
    background:linear-gradient(90deg,rgba(15,23,42,.85) 0%,rgba(15,23,42,.7) 40%,rgba(15,23,42,.2) 100%);
}
.login-container{width:100%;max-width:440px;padding:40px;position:relative;z-index:1;margin-left:8%}
.login-card{
    background:rgba(255,255,255,.97);border-radius:20px;padding:48px 40px;
    box-shadow:0 25px 60px rgba(0,0,0,.35);
    backdrop-filter:blur(12px);
}
.login-header{text-align:center;margin-bottom:40px}
.login-header h1{font-size:22px;font-weight:700;color:var(--text);margin-bottom:8px;white-space:nowrap}
.login-header p{font-size:13px;color:var(--text-secondary)}
.login-error{
    background:#fef2f2;color:var(--danger);padding:12px 16px;
    border-radius:8px;font-size:13px;margin-bottom:18px;border:1px solid #fecaca;
}
.login-icp{text-align:center;margin-top:24px;padding-top:20px;border-top:1px solid var(--border)}
.login-icp a{font-size:12px;color:var(--text-muted);text-decoration:none;transition:color .2s}
.login-icp a:hover{color:var(--primary)}
.btn-block{width:100%;justify-content:center;padding:14px;font-size:16px;margin-top:16px;border-radius:10px;letter-spacing:2px;font-weight:600}
#loginForm .form-group{margin-bottom:20px}
#loginForm .form-group label{font-size:13px;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px}
#loginForm .form-group input{padding:13px 16px;font-size:15px;border-radius:10px;border:1.5px solid #d1d5db;transition:all .2s;background:#f8fafc}
#loginForm .form-group input:focus{background:#fff;border-color:var(--primary);box-shadow:0 0 0 4px rgba(37,99,235,.1)}

/* Layout */
#app{display:flex;min-height:100vh}
.mobile-header{display:none;position:fixed;top:0;left:0;right:0;height:48px;background:var(--sidebar-bg);color:#fff;z-index:99;align-items:center;padding:0 16px;justify-content:space-between}
.mobile-menu-btn{background:none;border:none;color:#fff;font-size:20px;cursor:pointer;padding:4px}
.mobile-title{font-size:16px;font-weight:600}
.sidebar{
    width:240px;min-width:240px;background:var(--sidebar-bg);color:var(--sidebar-text);
    display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;
    z-index:100;transition:transform .3s;
}
.sidebar-header{
    padding:22px 20px;display:flex;align-items:center;justify-content:space-between;
    border-bottom:1px solid rgba(255,255,255,.08);
}
.sidebar-header h1{font-size:17px;font-weight:700;color:#fff;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sidebar-toggle{display:none;background:none;border:none;color:#fff;font-size:20px;cursor:pointer}
.nav-menu{padding:8px 0;flex:1}
.nav-item{
    display:flex;align-items:center;gap:12px;padding:11px 20px;margin:2px 10px;color:var(--sidebar-text);
    text-decoration:none;font-size:14px;transition:all .2s;border-radius:8px;
}
.nav-item:hover{background:rgba(255,255,255,.06);color:#e2e8f0}
.nav-item.active{background:var(--sidebar-active);color:#fff;font-weight:500}
.nav-icon{font-size:17px;width:22px;text-align:center;opacity:.85}
.nav-item.active .nav-icon{opacity:1}

.sidebar-footer{
    padding:14px 20px;border-top:1px solid rgba(255,255,255,.08);
    display:flex;align-items:center;justify-content:space-between;
}
.sidebar-footer .user-info{font-size:13px;color:var(--sidebar-text)}
.btn-logout{
    background:rgba(255,255,255,.08);border:none;color:var(--sidebar-text);
    padding:5px 12px;border-radius:6px;font-size:12px;cursor:pointer;transition:all .2s;
}
.btn-logout:hover{background:rgba(255,255,255,.15);color:#fff}

.main-content{
    margin-left:240px;flex:1;padding:28px 32px 0;min-width:0;
    display:flex;flex-direction:column;
}

/* Page */
.page{display:none;flex:1}
.page.active{display:block}
.page-header{
    display:flex;justify-content:space-between;align-items:center;margin-bottom:24px;
    flex-wrap:wrap;gap:12px;
}
.page-header h2{font-size:22px;font-weight:700;color:var(--text)}

/* Cards */
.card{background:var(--card-bg);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);border:1px solid var(--border)}
.card h3{font-size:15px;font-weight:600;margin-bottom:16px;color:var(--text)}

/* Stats Grid */
.stats-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px}
.stat-card{
    background:var(--card-bg);border-radius:var(--radius);padding:24px 20px;
    box-shadow:var(--shadow-sm);border:1px solid var(--border);text-align:center;
    transition:box-shadow .2s;
}
.stat-card:hover{box-shadow:var(--shadow-md)}
.stat-label{font-size:13px;color:var(--text-secondary);margin-bottom:8px;font-weight:500}
.stat-value{font-size:30px;font-weight:700;color:var(--primary)}

/* Search Bar */
.search-bar{
    display:flex;gap:10px;margin-bottom:20px;flex-wrap:wrap;align-items:center;
}
.search-bar input[type="text"],.search-bar input[type="date"],.search-bar select{
    padding:9px 14px;border:1.5px solid var(--border);border-radius:8px;font-size:14px;
    background:#fff;min-width:160px;transition:border-color .2s;
}
.search-bar input[type="text"]:focus,.search-bar input[type="date"]:focus,.search-bar select:focus{
    outline:none;border-color:var(--primary);
}
.search-bar input[type="text"]{flex:1;min-width:200px}
.checkbox-label{display:flex;align-items:center;gap:6px;font-size:14px;white-space:nowrap;cursor:pointer;color:var(--text-secondary)}

/* Table */
.table-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--border)}
.data-table{width:100%;border-collapse:collapse;font-size:14px}
.data-table th,.data-table td{padding:11px 14px;text-align:left;border-bottom:1px solid var(--border)}
.data-table th{background:#f8fafc;font-weight:600;white-space:nowrap;color:var(--text-secondary);font-size:12px;text-transform:uppercase;letter-spacing:.5px}
.data-table tbody tr:last-child td{border-bottom:none}
.data-table tbody tr:hover{background:#f8fafc}
.data-table .right{text-align:right;font-variant-numeric:tabular-nums}

/* Buttons */
.btn{
    display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:8px;
    font-size:13px;font-weight:500;cursor:pointer;border:1.5px solid var(--border);
    background:#fff;color:var(--text);transition:all .15s;white-space:nowrap;
}
.btn:hover{background:#f8fafc;border-color:#cbd5e1}
.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary);font-weight:600}
.btn-primary:hover{background:var(--primary-dark);border-color:var(--primary-dark)}
.btn-danger{color:var(--danger);border-color:#fecaca;background:#fff}
.btn-danger:hover{background:#fef2f2;border-color:var(--danger)}
.btn-sm{padding:5px 10px;font-size:12px;border-radius:6px}
.btn-outline{border:1.5px dashed #cbd5e1;background:transparent;color:var(--text-secondary)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}

/* Forms */
.form-row{margin-bottom:14px}
.form-row-2,.form-row-3{display:grid;gap:14px}
.form-row-2{grid-template-columns:1fr 1fr}
.form-row-3{grid-template-columns:1fr 1fr 1fr}
.form-group{display:flex;flex-direction:column}
.form-group label{font-size:13px;font-weight:500;margin-bottom:5px;color:var(--text-secondary)}
.form-group input,.form-group select,.form-group textarea{
    padding:9px 13px;border:1.5px solid var(--border);border-radius:8px;font-size:14px;
    font-family:inherit;transition:border-color .15s,box-shadow .15s;background:#fff;
}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{
    outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(37,99,235,.1);
}
.form-group textarea{resize:vertical}
.section-title{font-size:14px;font-weight:600;margin:20px 0 10px;padding-top:16px;border-top:1px solid var(--border);color:var(--text)}

/* Modal */
.modal{display:none;position:fixed;top:0;left:0;width:100%;height:100%;z-index:1000;overflow-y:auto}
.modal.active{display:flex;align-items:flex-start;justify-content:center;padding:40px 0}
.modal-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(15,23,42,.5);backdrop-filter:blur(2px)}
.modal-content{
    position:relative;background:#fff;border-radius:16px;width:90%;max-width:720px;
    max-height:85vh;display:flex;flex-direction:column;box-shadow:var(--shadow-lg);z-index:1;
}
.modal-lg{max-width:920px}
.modal-header{
    display:flex;justify-content:space-between;align-items:center;
    padding:18px 24px;border-bottom:1px solid var(--border);
}
.modal-header h3{font-size:17px;font-weight:600}
.modal-close{background:none;border:none;font-size:22px;cursor:pointer;color:var(--text-muted);padding:0 4px;line-height:1}
.modal-close:hover{color:var(--text)}
.modal-body{padding:24px;overflow-y:auto;flex:1}
.modal-footer{
    display:flex;justify-content:flex-end;gap:10px;
    padding:14px 24px;border-top:1px solid var(--border);background:#f8fafc;border-radius:0 0 16px 16px;
}

/* Tabs */
.tabs{display:flex;gap:4px;margin-bottom:20px;border-bottom:2px solid var(--border)}
.tab{
    padding:10px 20px;font-size:14px;font-weight:500;cursor:pointer;border:none;
    background:none;color:var(--text-secondary);border-bottom:2px solid transparent;
    margin-bottom:-2px;transition:all .15s;border-radius:8px 8px 0 0;
}
.tab:hover{color:var(--text);background:rgba(0,0,0,.02)}
.tab.active{color:var(--primary);border-bottom-color:var(--primary);background:var(--primary-light)}
.tab-content{display:none}
.tab-content.active{display:block}

/* Pagination */
.pagination{display:flex;justify-content:center;align-items:center;gap:6px;margin-top:20px;padding-bottom:8px}
.pagination button{
    padding:7px 14px;border:1.5px solid var(--border);border-radius:8px;background:#fff;
    cursor:pointer;font-size:13px;transition:all .15s;
}
.pagination button:not(:disabled):hover{background:var(--primary-light);border-color:var(--primary);color:var(--primary)}
.pagination button:disabled{opacity:.4;cursor:not-allowed}
.pagination span{font-size:13px;color:var(--text-secondary);padding:0 8px}

/* Status badges */
.badge{
    display:inline-block;padding:3px 10px;border-radius:20px;font-size:11px;font-weight:600;
    letter-spacing:.3px;
}
.badge-draft{background:#f1f5f9;color:#64748b}
.badge-active,.badge-confirmed{background:#ecfdf5;color:#065f46}
.badge-completed,.badge-delivered{background:#eff6ff;color:#1e40af}
.badge-terminated,.badge-cancelled{background:#fef2f2;color:#991b1b}
.badge-pending{background:#fffbeb;color:#92400e}
.badge-low-stock{background:#fef2f2;color:#dc2626}

/* Toast */
.toast{
    position:fixed;top:24px;right:24px;z-index:2000;padding:12px 24px;
    border-radius:10px;color:#fff;font-size:14px;box-shadow:var(--shadow-lg);
    animation:slideIn .3s ease;max-width:400px;font-weight:500;
}
.toast-success{background:var(--success)}
.toast-error{background:var(--danger)}
@keyframes slideIn{from{transform:translateX(100%);opacity:0}to{transform:translateX(0);opacity:1}}

/* Image Upload */
.image-upload-area{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.image-upload-area img{border:1px solid var(--border);border-radius:8px}

/* Footer */
.footer-icp{text-align:center;padding:20px;font-size:12px;color:var(--text-muted);margin-top:32px}
.footer-icp a{color:var(--text-muted);text-decoration:none;transition:color .15s}
.footer-icp a:hover{color:var(--primary)}

/* Responsive */
@media (max-width:768px){
    .login-card{padding:32px 24px}
    .login-container{margin-left:0;padding:20px}
    #loginPage{justify-content:center}
    .login-header h1{font-size:18px}
    .mobile-header{display:flex}
    .sidebar{transform:translateX(-100%)}
    .sidebar.open{transform:translateX(0);box-shadow:4px 0 20px rgba(0,0,0,.3)}
    .sidebar-toggle{display:block}
    .main-content{margin-left:0;padding:16px;padding-top:60px}
    .form-row-2,.form-row-3{grid-template-columns:1fr}
    .stats-grid{grid-template-columns:1fr 1fr}
    .search-bar{flex-direction:column}
    .search-bar input[type="text"],.search-bar select{width:100%!important;min-width:auto}
    .modal-content{width:95%;max-height:80vh;border-radius:12px}
    .modal.active{padding:20px 0}
    .page-header{flex-direction:column;align-items:flex-start}
}
@media (max-width:480px){
    .stats-grid{grid-template-columns:1fr}
    .main-content{padding:12px}
    .login-container{padding:16px}
}