/* ===== CRM System - Java Spring Boot Edition ===== */
:root {
    --primary: #4f6ef7; --primary-light: #eef1ff; --primary-dark: #3a54d4;
    --success: #22c55e; --success-light: #f0fdf4;
    --warning: #f59e0b; --warning-light: #fffbeb;
    --danger: #ef4444; --danger-light: #fef2f2;
    --info: #06b6d4; --info-light: #ecfeff;
    --gray-50: #f9fafb; --gray-100: #f3f4f6; --gray-200: #e5e7eb;
    --gray-300: #d1d5db; --gray-400: #9ca3af; --gray-500: #6b7280;
    --gray-600: #4b5563; --gray-700: #374151; --gray-800: #1f2937; --gray-900: #111827;
    --radius: 8px; --radius-lg: 12px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,.05);
    --shadow: 0 1px 3px rgba(0,0,0,.1), 0 1px 2px rgba(0,0,0,.06);
    --shadow-md: 0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.06);
    --shadow-lg: 0 10px 15px rgba(0,0,0,.1), 0 4px 6px rgba(0,0,0,.05);
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:var(--gray-50);color:var(--gray-800);min-height:100vh;line-height:1.6}
a{text-decoration:none;color:var(--primary)}a:hover{color:var(--primary-dark)}

/* Layout */
.app-layout{display:flex;min-height:100vh}
.sidebar{width:240px;background:#fff;border-right:1px solid var(--gray-200);display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:100;overflow-y:auto}
.sidebar-logo{padding:20px 24px;border-bottom:1px solid var(--gray-100);display:flex;align-items:center;gap:12px}
.sidebar-logo .logo-icon{width:36px;height:36px;background:linear-gradient(135deg,var(--primary),#818cf8);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px;font-weight:700}
.sidebar-logo h1{font-size:18px;font-weight:700;color:var(--gray-900)}
.sidebar-nav{flex:1;padding:12px 0}
.nav-section{margin-bottom:8px}
.nav-section-title{padding:8px 24px 4px;font-size:11px;text-transform:uppercase;color:var(--gray-400);font-weight:600;letter-spacing:.5px}
.nav-item{display:flex;align-items:center;padding:10px 24px;margin:2px 12px;border-radius:var(--radius);color:var(--gray-600);font-size:14px;font-weight:500;cursor:pointer;transition:all .15s;gap:12px}
.nav-item:hover{background:var(--gray-100);color:var(--gray-900)}
.nav-item.active{background:var(--primary-light);color:var(--primary);font-weight:600}
.nav-item .nav-icon{font-size:18px;width:20px;text-align:center}
.nav-badge{margin-left:auto;font-size:11px;padding:2px 8px;border-radius:10px;font-weight:600}
.nav-badge.red{background:var(--danger-light);color:var(--danger)}
.nav-badge.blue{background:var(--primary-light);color:var(--primary)}
.sidebar-footer{padding:16px 20px;border-top:1px solid var(--gray-100)}
.user-info-small{display:flex;align-items:center;gap:10px;padding:8px 12px;border-radius:var(--radius);cursor:pointer;transition:background .15s}
.user-info-small:hover{background:var(--gray-100)}
.user-avatar-sm{width:36px;height:36px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600}
.user-meta-sm{flex:1;min-width:0}
.user-meta-sm .uname{font-size:13px;font-weight:600;color:var(--gray-800);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.user-meta-sm .urole{font-size:11px;color:var(--gray-400)}
.main-content{flex:1;margin-left:240px;padding:0}

/* Topbar */
.topbar{background:#fff;border-bottom:1px solid var(--gray-200);padding:16px 32px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:50}
.topbar h2{font-size:20px;font-weight:700;color:var(--gray-900)}
.topbar-actions{display:flex;align-items:center;gap:16px}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:var(--radius);font-size:14px;font-weight:500;cursor:pointer;border:1px solid transparent;transition:all .15s;white-space:nowrap}
.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}.btn-primary:hover{background:var(--primary-dark)}
.btn-outline{background:#fff;border-color:var(--gray-300);color:var(--gray-700)}.btn-outline:hover{background:var(--gray-50);border-color:var(--gray-400)}
.btn-success{background:var(--success);color:#fff}.btn-success:hover{opacity:.9}
.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover{opacity:.9}
.btn-sm{padding:5px 10px;font-size:12px}
.btn-xs{padding:3px 8px;font-size:11px;border-radius:4px}

/* Content */
.content-area{padding:24px 32px}

/* Stats cards */
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-bottom:24px}
.stat-card{background:#fff;border-radius:var(--radius-lg);padding:20px 24px;box-shadow:var(--shadow-sm);border:1px solid var(--gray-100);display:flex;align-items:center;gap:16px;transition:box-shadow .2s}
.stat-card:hover{box-shadow:var(--shadow-md)}
.stat-icon{width:48px;height:48px;border-radius:var(--radius);display:flex;align-items:center;justify-content:center;font-size:22px}
.stat-icon.blue{background:var(--primary-light);color:var(--primary)}
.stat-icon.green{background:var(--success-light);color:var(--success)}
.stat-icon.orange{background:var(--warning-light);color:var(--warning)}
.stat-icon.red{background:var(--danger-light);color:var(--danger)}
.stat-icon.teal{background:var(--info-light);color:var(--info)}
.stat-info{flex:1}
.stat-value{font-size:28px;font-weight:700;color:var(--gray-900);line-height:1.2}
.stat-label{font-size:13px;color:var(--gray-500);margin-top:2px}

/* Charts */
.charts-grid{display:grid;grid-template-columns:2fr 1fr;gap:20px;margin-bottom:24px}
.charts-grid.full{grid-template-columns:1fr}
.card{background:#fff;border-radius:var(--radius-lg);border:1px solid var(--gray-100);box-shadow:var(--shadow-sm);overflow:hidden}
.card-header{padding:18px 20px;border-bottom:1px solid var(--gray-100);display:flex;align-items:center;justify-content:space-between}
.card-header h3{font-size:15px;font-weight:600;color:var(--gray-800)}
.card-body{padding:20px}
.card-body.no-padding{padding:0}

/* Tables */
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:14px}
thead{background:var(--gray-50)}
th{padding:12px 16px;text-align:left;font-weight:600;color:var(--gray-500);font-size:12px;text-transform:uppercase;letter-spacing:.5px;border-bottom:1px solid var(--gray-200);white-space:nowrap}
td{padding:14px 16px;border-bottom:1px solid var(--gray-100);color:var(--gray-700)}
tr:hover td{background:var(--gray-50)}
.empty-row td{text-align:center;color:var(--gray-400);padding:40px 16px}

/* Tags */
.tag{display:inline-block;padding:3px 10px;border-radius:12px;font-size:12px;font-weight:500;white-space:nowrap}
.tag-blue{background:var(--primary-light);color:var(--primary)}
.tag-green{background:var(--success-light);color:var(--success)}
.tag-orange{background:var(--warning-light);color:var(--warning)}
.tag-red{background:var(--danger-light);color:var(--danger)}
.tag-gray{background:var(--gray-100);color:var(--gray-600)}
.tag-teal{background:var(--info-light);color:var(--info)}

/* Kanban */
.kanban-board{display:flex;gap:16px;overflow-x:auto;padding-bottom:16px}
.kanban-column{min-width:280px;flex:1;background:var(--gray-100);border-radius:var(--radius-lg);padding:12px}
.kanban-col-header{display:flex;align-items:center;justify-content:space-between;padding:8px 12px 12px;font-size:13px;font-weight:700;color:var(--gray-700)}
.kanban-col-count{font-size:12px;color:var(--gray-400);font-weight:500;background:var(--gray-200);padding:2px 8px;border-radius:10px}
.kanban-card{background:#fff;border-radius:var(--radius);padding:14px;margin-bottom:8px;box-shadow:var(--shadow-sm);border:1px solid var(--gray-100);cursor:pointer;transition:all .15s}
.kanban-card:hover{box-shadow:var(--shadow-md);border-color:var(--primary)}
.kanban-card-title{font-size:14px;font-weight:600;color:var(--gray-800);margin-bottom:8px}
.kanban-card-meta{font-size:12px;color:var(--gray-500);display:flex;flex-direction:column;gap:4px}
.kanban-card-footer{display:flex;justify-content:space-between;align-items:center;margin-top:10px;padding-top:10px;border-top:1px solid var(--gray-100)}

/* Forms */
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:13px;font-weight:600;color:var(--gray-700);margin-bottom:6px}
.form-group .hint{font-size:12px;color:var(--gray-400);font-weight:400}
input[type="text"],input[type="email"],input[type="password"],input[type="tel"],input[type="url"],input[type="number"],input[type="date"],input[type="datetime-local"],select,textarea{width:100%;padding:10px 12px;border:1px solid var(--gray-300);border-radius:var(--radius);font-size:14px;color:var(--gray-800);transition:border-color .15s;background:#fff;font-family:inherit}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}
textarea{resize:vertical;min-height:80px}
.form-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px}

/* Modal */
.modal-overlay{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.5);z-index:1000;align-items:center;justify-content:center}
.modal-overlay.show{display:flex}
.modal{background:#fff;border-radius:var(--radius-lg);width:90%;max-width:640px;max-height:85vh;overflow-y:auto;box-shadow:var(--shadow-lg)}
.modal.wide{max-width:900px}
.modal-header{padding:20px 24px;border-bottom:1px solid var(--gray-200);display:flex;align-items:center;justify-content:space-between}
.modal-header h3{font-size:17px;font-weight:700}
.modal-close{width:32px;height:32px;border-radius:50%;border:none;background:var(--gray-100);cursor:pointer;font-size:18px;display:flex;align-items:center;justify-content:center;color:var(--gray-500);transition:all .15s}
.modal-close:hover{background:var(--gray-200);color:var(--gray-800)}
.modal-body{padding:24px}
.modal-footer{padding:16px 24px;border-top:1px solid var(--gray-100);display:flex;justify-content:flex-end;gap:12px}

/* Toolbar */
.toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:20px;flex-wrap:wrap}
.toolbar-left{display:flex;align-items:center;gap:12px;flex:1}
.search-box{position:relative;flex:1;max-width:320px}
.search-box input{padding:9px 12px 9px 36px;border:1px solid var(--gray-300);border-radius:var(--radius);width:100%;font-size:13px}
.search-box input:focus{outline:none;border-color:var(--primary)}
.search-icon{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--gray-400);font-size:14px}

/* Pagination */
.pagination{display:flex;align-items:center;justify-content:center;gap:4px;margin-top:20px}
.pagination button{padding:6px 12px;border:1px solid var(--gray-300);background:#fff;border-radius:var(--radius);cursor:pointer;font-size:13px;color:var(--gray-700)}
.pagination button:hover{background:var(--gray-50)}
.pagination button.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.pagination button:disabled{opacity:.5;cursor:not-allowed}

/* Toast */
.toast{position:fixed;top:24px;right:24px;z-index:2000;padding:12px 20px;border-radius:var(--radius);color:#fff;font-size:14px;font-weight:500;box-shadow:var(--shadow-lg);display:none;animation:slideIn .3s ease}
.toast.show{display:block}
.toast.success{background:var(--success)}
.toast.error{background:var(--danger)}
.toast.info{background:var(--primary)}
@keyframes slideIn{from{transform:translateX(100%);opacity:0}to{transform:translateX(0);opacity:1}}

/* Login page */
.login-page{display:flex;min-height:100vh;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%)}
.login-card{background:#fff;border-radius:var(--radius-lg);padding:40px;width:400px;max-width:90%;box-shadow:var(--shadow-lg)}
.login-card h1{font-size:24px;font-weight:700;text-align:center;margin-bottom:8px;color:var(--gray-900)}
.login-card .subtitle{text-align:center;color:var(--gray-500);font-size:14px;margin-bottom:32px}
.login-card .form-group{margin-bottom:20px}
.login-card .btn{width:100%;justify-content:center;padding:12px}
.login-links{text-align:center;margin-top:16px;font-size:13px;color:var(--gray-500)}

/* Landing page */
.landing-page{min-height:100vh}
.landing-header{background:#fff;border-bottom:1px solid var(--gray-200);padding:16px 32px;display:flex;align-items:center;justify-content:space-between}
.landing-header .logo{display:flex;align-items:center;gap:12px;font-size:20px;font-weight:700;color:var(--gray-900)}
.landing-hero{padding:80px 32px;text-align:center;background:linear-gradient(135deg,var(--primary-light) 0%,#f5f3ff 50%,#ede9fe 100%)}
.landing-hero h1{font-size:48px;font-weight:800;color:var(--gray-900);margin-bottom:16px}
.landing-hero p{font-size:18px;color:var(--gray-600);max-width:600px;margin:0 auto 32px}
.landing-features{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px;padding:64px 32px;max-width:1200px;margin:0 auto}
.feature-card{background:#fff;border-radius:var(--radius-lg);padding:32px;box-shadow:var(--shadow-sm);border:1px solid var(--gray-100);text-align:center}
.feature-card .feature-icon{width:56px;height:56px;border-radius:var(--radius);display:inline-flex;align-items:center;justify-content:center;font-size:28px;margin-bottom:16px}

/* Detail sections */
.detail-section{margin-bottom:24px}
.detail-section h4{font-size:13px;font-weight:600;color:var(--gray-500);text-transform:uppercase;margin-bottom:12px}
.detail-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px}
.detail-item{background:var(--gray-50);padding:12px 16px;border-radius:var(--radius)}
.detail-item .dlabel{font-size:12px;color:var(--gray-400);margin-bottom:4px}
.detail-item .dvalue{font-size:14px;font-weight:600;color:var(--gray-800)}

/* Tabs */
.tabs{display:flex;gap:0;border-bottom:1px solid var(--gray-200);margin-bottom:20px}
.tab-item{padding:10px 20px;font-size:14px;font-weight:500;color:var(--gray-500);cursor:pointer;border-bottom:2px solid transparent;transition:all .15s}
.tab-item:hover{color:var(--gray-700)}
.tab-item.active{color:var(--primary);border-bottom-color:var(--primary)}

/* Scrollbar */
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:var(--gray-100)}
::-webkit-scrollbar-thumb{background:var(--gray-300);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--gray-400)}