/* ===== Design Tokens ===== */
:root {
  --primary: #3262F3;
  --primary-hover: #2451d9;
  --primary-light: rgba(50, 98, 243, 0.07);
  --bg: #f5f6fa;
  --white: #ffffff;
  --text: #1a1d26;
  --text-secondary: #5c6070;
  --text-muted: #8e93a6;
  --border: #e6e8ef;
  --border-light: #eff0f5;
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --success: #22c55e;
  --shadow-xs: 0 1px 2px rgba(0,0,0,0.03);
  --shadow-sm: 0 1px 4px rgba(0,0,0,0.05);
  --shadow: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.12);
  --radius: 8px;
  --radius-lg: 10px;
  --transition: 0.15s ease;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --sidebar-w: 240px;
}

/* ===== Reset ===== */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{font-size:14px;-webkit-font-smoothing:antialiased}
body{font-family:var(--font);color:var(--text);background:var(--bg);line-height:1.5}
input,select,textarea,button{font-family:var(--font);font-size:inherit}
a{text-decoration:none;color:inherit}

/* ===== LOGIN PAGE ===== */
.login-page{display:flex;align-items:center;justify-content:center;min-height:100vh;background:var(--bg)}
.login-container{width:100%;max-width:400px;padding:1.5rem;text-align:center}
.login-card{background:var(--white);border-radius:var(--radius-lg);padding:2.5rem 2rem;box-shadow:var(--shadow);border:1px solid var(--border)}
.login-logo{display:flex;align-items:center;justify-content:center;gap:0.75rem;margin-bottom:0.5rem}
.login-logo-icon{width:44px;height:auto}
.login-logo-text{height:22px;width:auto}
.login-subtitle{color:var(--text-secondary);font-size:0.875rem;margin-bottom:2rem;font-weight:500}
.login-form{text-align:left}
.login-footer{margin-top:1.5rem;color:var(--text-muted);font-size:0.75rem}

/* ===== FORM ===== */
.form-group{margin-bottom:0.875rem;flex:1}
.form-group label{display:block;font-weight:500;color:var(--text-secondary);margin-bottom:0.3rem;font-size:0.8125rem}
.req{color:var(--danger)}
.form-group input,.form-group select,.form-group textarea{
  width:100%;padding:0.5625rem 0.75rem;border:1px solid var(--border);border-radius:var(--radius);
  background:var(--white);color:var(--text);transition:border-color var(--transition),box-shadow var(--transition);outline:none;font-size:0.875rem
}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}
.form-group textarea{resize:vertical;min-height:64px}
.form-row{display:flex;gap:0.875rem}
.form-error{background:#fef2f2;color:var(--danger);padding:0.5rem 0.75rem;border-radius:var(--radius);font-size:0.8125rem;margin-bottom:0.875rem;border:1px solid #fecaca}

/* ===== BUTTONS ===== */
.btn{display:inline-flex;align-items:center;gap:0.4rem;padding:0.5rem 1rem;border-radius:var(--radius);font-weight:600;font-size:0.8125rem;cursor:pointer;border:none;transition:all var(--transition);white-space:nowrap}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-hover)}
.btn-ghost{background:transparent;color:var(--text-secondary);border:1px solid var(--border)}
.btn-ghost:hover{background:var(--bg);color:var(--text)}
.btn-danger{background:var(--danger);color:#fff}
.btn-danger:hover{background:var(--danger-hover)}
.btn-sm{padding:0.375rem 0.75rem;font-size:0.75rem}
.btn-icon{width:32px;height:32px;padding:0;background:none;border:none;cursor:pointer;border-radius:6px;color:var(--text-muted);transition:all var(--transition);display:inline-flex;align-items:center;justify-content:center}
.btn-icon:hover{background:var(--border-light);color:var(--text)}
.btn-icon.danger:hover{background:#fef2f2;color:var(--danger)}

/* ===== LIGHT SIDEBAR ===== */
.sidebar{
  position:fixed;top:0;left:0;width:var(--sidebar-w);height:100vh;
  background:var(--white);border-right:1px solid var(--border);
  display:flex;flex-direction:column;z-index:100;transition:transform 0.25s ease;
  overflow-y:auto;
}

.sidebar-header{padding:1.25rem 1.25rem 1rem;border-bottom:1px solid var(--border)}
.sidebar-brand{display:flex;align-items:center;justify-content:center;gap:0.625rem;padding:0.5rem 0}
.sidebar-logo-icon{width:30px;height:auto}
.sidebar-logo-text{height:15px;width:auto}

.sidebar-section-label{padding:1.25rem 1.25rem 0.5rem;font-size:0.6875rem;font-weight:600;text-transform:uppercase;letter-spacing:0.08em;color:var(--text-muted)}

.sidebar-nav{flex:1;padding:0 0.625rem;display:flex;flex-direction:column;gap:2px}

.sidebar-link{
  display:flex;align-items:center;gap:0.625rem;padding:0.5625rem 0.75rem;border-radius:var(--radius);
  color:var(--text-secondary);font-weight:500;font-size:0.875rem;
  transition:all var(--transition);border:none;background:none;cursor:pointer;width:100%;text-align:left;
}
.sidebar-link:hover{background:var(--bg);color:var(--text)}
.sidebar-link.active{background:var(--primary-light);color:var(--primary)}
.sidebar-link.active .sidebar-link-icon{color:var(--primary)}

.sidebar-link-icon{width:20px;height:20px;display:flex;align-items:center;justify-content:center;flex-shrink:0;color:var(--text-muted)}
.sidebar-link:hover .sidebar-link-icon{color:var(--text-secondary)}

.sidebar-bottom{padding:0.625rem;border-top:1px solid var(--border);margin-top:auto}
.logout-link{background:var(--danger) !important;color:#fff !important;justify-content:center}
.logout-link .sidebar-link-icon{color:#fff !important}
.logout-link:hover{background:var(--danger-hover) !important}

/* ===== MOBILE HEADER ===== */
.mobile-topbar{display:none;position:fixed;top:0;left:0;right:0;height:56px;background:var(--white);border-bottom:1px solid var(--border);align-items:center;justify-content:space-between;padding:0 1rem;z-index:90}
.hamburger-btn{background:none;border:none;cursor:pointer;padding:0.25rem;color:var(--text);border-radius:6px}
.hamburger-btn:hover{background:var(--bg)}
.mobile-brand{display:flex;align-items:center;gap:0.5rem}
.mobile-brand-icon{width:26px;height:auto}
.mobile-brand-text{height:14px;width:auto}
.sidebar-backdrop{display:none;position:fixed;inset:0;background:rgba(0,0,0,0.3);z-index:95}
.sidebar-backdrop.active{display:block}

/* ===== MAIN CONTENT ===== */
.main-content{margin-left:var(--sidebar-w);padding:1.5rem 2rem;min-height:100vh}
.content-header{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:1.25rem;flex-wrap:wrap;gap:0.75rem}
.content-header h1{font-size:1.375rem;font-weight:700;color:var(--text)}
.page-subtitle{color:var(--text-muted);font-size:0.8125rem;margin-top:2px}
.header-actions{display:flex;gap:0.5rem}

/* ===== STATS GRID ===== */
.stats-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(175px,1fr));gap:0.75rem;margin-bottom:1.25rem}

.stat-card{
  background:var(--white);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:1rem 1.125rem;display:flex;flex-direction:column;gap:0.25rem;
  transition:box-shadow var(--transition);
}
.stat-card:hover{box-shadow:var(--shadow-sm)}

.stat-icon{
  width:36px;height:36px;border-radius:8px;display:flex;align-items:center;justify-content:center;
  margin-bottom:0.375rem;
}

.si-blue{background:rgba(50,98,243,0.08);color:#3262F3}
.si-sky{background:rgba(56,189,248,0.1);color:#0284c7}
.si-amber{background:rgba(245,158,11,0.1);color:#d97706}
.si-green{background:rgba(34,197,94,0.1);color:#16a34a}
.si-purple{background:rgba(139,92,246,0.08);color:#7c3aed}
.si-indigo{background:rgba(99,102,241,0.08);color:#4f46e5}
.si-cyan{background:rgba(6,182,212,0.1);color:#0891b2}
.si-red{background:rgba(239,68,68,0.08);color:#dc2626}

.stat-value{font-size:1.375rem;font-weight:700;color:var(--text);line-height:1.2}
.stat-label{font-size:0.6875rem;color:var(--text-muted);font-weight:500;text-transform:uppercase;letter-spacing:0.03em}

/* ===== FILTERS ===== */
.filters-bar{
  background:var(--white);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:0.75rem;margin-bottom:0.75rem;display:flex;flex-wrap:wrap;gap:0.5rem;align-items:center;
}
.search-box{display:flex;align-items:center;gap:0.375rem;flex:1;min-width:200px;padding:0.4375rem 0.625rem;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg);color:var(--text-muted);transition:all var(--transition)}
.search-box:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light);background:var(--white)}
.search-input{border:none;background:none;outline:none;width:100%;color:var(--text);font-size:0.8125rem}
.filter-pills{display:flex;gap:0.375rem;flex-wrap:wrap}
.filter-select{padding:0.4375rem 0.625rem;border:1px solid var(--border);border-radius:var(--radius);background:var(--white);color:var(--text-secondary);font-size:0.75rem;cursor:pointer;outline:none;transition:border-color var(--transition)}
.filter-select:focus{border-color:var(--primary)}

/* ===== TABLE ===== */
.table-card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius-lg);overflow-x:auto}
.leads-table{width:100%;border-collapse:collapse;min-width:920px}
.leads-table thead{background:var(--bg)}
.leads-table th{padding:0.625rem 0.875rem;text-align:left;font-weight:600;font-size:0.6875rem;text-transform:uppercase;letter-spacing:0.05em;color:var(--text-muted);border-bottom:1px solid var(--border);white-space:nowrap}
.leads-table td{padding:0.5625rem 0.875rem;font-size:0.8125rem;color:var(--text);border-bottom:1px solid var(--border-light);vertical-align:middle}
.leads-table tbody tr{transition:background var(--transition)}
.leads-table tbody tr:hover{background:var(--primary-light)}
.leads-table tbody tr:last-child td{border-bottom:none}
.empty-row td{text-align:center;padding:2.5rem 1rem;color:var(--text-muted)}
.lead-name{font-weight:600;color:var(--text)}
.lead-mobile{font-family:'SF Mono',Monaco,'Cascadia Code','Consolas',monospace;font-size:0.75rem;color:var(--text-secondary)}
.actions-cell{display:flex;gap:2px}

/* ===== BADGES & INLINE SELECT ===== */
.badge{display:inline-flex;align-items:center;padding:0.15rem 0.5rem;border-radius:50px;font-size:0.6875rem;font-weight:600;white-space:nowrap}
.badge-new{background:#eff6ff;color:#1d4ed8}
.badge-contacted{background:#fffbeb;color:#92400e}
.badge-qualified{background:#ecfeff;color:#0e7490}
.badge-proposal-sent{background:#faf5ff;color:#7c3aed}
.badge-negotiation{background:#fff7ed;color:#c2410c}
.badge-converted{background:#f0fdf4;color:#15803d}
.badge-lost{background:#fef2f2;color:#b91c1c}
.badge-low{background:#f1f5f9;color:#64748b}
.badge-medium{background:#eff6ff;color:#2563eb}
.badge-high{background:#fff7ed;color:#c2410c}
.badge-urgent{background:#fef2f2;color:#b91c1c}
.badge-lead{background:var(--primary-light);color:var(--primary)}
.badge-client{background:#f0fdf4;color:#15803d}

.inline-status-select{border:none;outline:none;cursor:pointer;appearance:none;padding-right:1.25rem;background-image:url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");background-repeat:no-repeat;background-position:right 0.25rem center;background-size:12px;font-family:inherit}
.inline-status-select option{background:var(--white);color:var(--text)}

/* ===== PAGINATION ===== */
.pagination{display:flex;align-items:center;justify-content:center;gap:0.75rem;padding:0.875rem 0 0.25rem}
.pg-btn{padding:0.375rem 0.75rem;border:1px solid var(--border);border-radius:var(--radius);background:var(--white);color:var(--text-secondary);font-weight:500;font-size:0.8125rem;cursor:pointer;transition:all var(--transition)}
.pg-btn:hover:not(:disabled){background:var(--primary);color:#fff;border-color:var(--primary)}
.pg-btn:disabled{opacity:0.3;cursor:not-allowed}
.pg-info{font-size:0.8125rem;color:var(--text-muted);font-weight:500}

/* ===== MODALS ===== */
.modal-overlay{position:fixed;inset:0;background:rgba(15,23,42,0.4);backdrop-filter:blur(2px);display:none;align-items:center;justify-content:center;z-index:200;padding:1rem;overflow-y:auto}
.modal-overlay.active{display:flex}
.modal{background:var(--white);border-radius:var(--radius-lg);width:100%;max-width:580px;max-height:90vh;overflow-y:auto;box-shadow:var(--shadow-lg)}
.modal-lg{max-width:680px}
.modal-sm{max-width:400px}
.modal-header{display:flex;align-items:center;justify-content:space-between;padding:1.125rem 1.25rem;border-bottom:1px solid var(--border)}
.modal-header h2{font-size:1rem;font-weight:700}
.modal-close{background:none;border:none;font-size:1.375rem;cursor:pointer;color:var(--text-muted);padding:0.25rem;line-height:1;border-radius:6px;transition:all var(--transition)}
.modal-close:hover{background:var(--bg);color:var(--text)}
.modal-body{padding:1.25rem}
.modal-actions{display:flex;justify-content:flex-end;gap:0.5rem;padding:1rem 1.25rem;border-top:1px solid var(--border)}

/* ===== DETAILS ===== */
.details-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-bottom:1.25rem}
.detail-item{display:flex;flex-direction:column;gap:2px}
.detail-label{font-size:0.6875rem;font-weight:600;text-transform:uppercase;letter-spacing:0.05em;color:var(--text-muted)}
.detail-value{font-size:0.875rem;color:var(--text);font-weight:500}
.section-title{font-size:0.8125rem;font-weight:700;color:var(--text);margin-bottom:0.75rem;padding-bottom:0.375rem;border-bottom:1px solid var(--border-light);display:flex;align-items:center;gap:0.4rem}

/* ===== ACTIVITY TIMELINE ===== */
.timeline{position:relative;padding-left:1.25rem}
.timeline::before{content:'';position:absolute;left:4px;top:4px;bottom:4px;width:2px;background:var(--border)}
.timeline-item{position:relative;padding-bottom:0.75rem;padding-left:0.75rem}
.timeline-item::before{content:'';position:absolute;left:-1.25rem;top:5px;width:7px;height:7px;border-radius:50%;background:var(--primary);border:2px solid var(--white);box-shadow:0 0 0 2px var(--primary-light)}
.timeline-item:last-child{padding-bottom:0}
.timeline-note{font-size:0.8125rem;color:var(--text);line-height:1.35}
.timeline-time{font-size:0.6875rem;color:var(--text-muted);margin-top:1px}

/* ===== TOAST ===== */
.toast-container{position:fixed;top:1rem;right:1.5rem;z-index:300;display:flex;flex-direction:column;gap:0.5rem}
.toast{padding:0.625rem 1rem;border-radius:var(--radius);font-size:0.8125rem;font-weight:500;color:#fff;box-shadow:var(--shadow-md);animation:toastIn 0.25s ease;max-width:340px}
.toast.success{background:#16a34a}.toast.error{background:var(--danger)}.toast.info{background:var(--primary)}
.toast.fade-out{animation:toastOut 0.25s ease forwards}
@keyframes toastIn{from{opacity:0;transform:translateY(-0.5rem)}to{opacity:1;transform:translateY(0)}}
@keyframes toastOut{from{opacity:1;transform:translateY(0)}to{opacity:0;transform:translateY(-0.5rem)}}

.text-muted{color:var(--text-muted);font-size:0.8125rem;margin-top:0.25rem}

/* ===== RESPONSIVE ===== */
@media(max-width:768px){
  .sidebar{transform:translateX(-100%)}
  .sidebar.open{transform:translateX(0)}
  .mobile-topbar{display:flex}
  .main-content{margin-left:0;padding:1rem;padding-top:72px}
  .content-header{flex-direction:column}
  .header-actions{width:100%}
  .header-actions .btn{flex:1;justify-content:center}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:0.5rem}
  .stat-card{padding:0.875rem}
  .stat-icon{width:32px;height:32px}
  .stat-value{font-size:1.125rem}
  .filters-bar{flex-direction:column;align-items:stretch}
  .search-box{min-width:auto}
  .filter-pills{display:grid;grid-template-columns:1fr 1fr;gap:0.375rem}
  .modal{max-height:95vh;margin:0.5rem}
  .form-row{flex-direction:column;gap:0}
  .details-grid{grid-template-columns:1fr}
  .toast-container{left:1rem;right:1rem}
  .toast{max-width:100%}
}

@media(max-width:480px){
  .stats-grid{grid-template-columns:1fr 1fr}
  .filter-pills{grid-template-columns:1fr}
  .header-actions{flex-direction:column}
  .pagination{gap:0.5rem}
}