:root {
  --primary: #4f46e5; --primary-gradient: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%); --primary-shadow: #3730a3;
  --secondary: #64748b; --secondary-gradient: linear-gradient(135deg, #475569 0%, #334155 100%); --secondary-shadow: #1e293b;
  --success: #10b981; --success-gradient: linear-gradient(135deg, #059669 0%, #10b981 100%); --success-shadow: #047857;
  --danger: #ef4444; --danger-gradient: linear-gradient(135deg, #dc2626 0%, #ef4444 100%); --danger-shadow: #b91c1c;
  --bg-color: #f0f4f8; --sidebar-bg: #0b1120; --card-bg: #ffffff;
  --text-main: #0f172a; --text-muted: #475569; --sidebar-text: #94a3b8; --sidebar-text-active: #ffffff;
  --sidebar-active-bg: rgba(255, 255, 255, 0.08); --sidebar-accent: #0ea5e9;
  --border-color: #e2e8f0; --sidebar-border: #1e293b;
  --shadow-sm: 0 2px 4px rgba(15, 23, 42, 0.05); --shadow-md: 0 8px 16px rgba(15, 23, 42, 0.08); --shadow-lg: 0 15px 35px rgba(15, 23, 42, 0.1);
  --radius: 20px; --radius-sm: 12px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Inter', sans-serif; background-color: var(--bg-color); background-attachment: fixed; color: var(--text-main); -webkit-font-smoothing: antialiased; }
.app-container { display: flex; height: 100vh; overflow: hidden; }
.sidebar { width: 280px; background-color: var(--sidebar-bg); background-image: linear-gradient(180deg, #0b1120 0%, #172554 100%); border-right: 1px solid var(--sidebar-border); display: flex; flex-direction: column; flex-shrink: 0; color: var(--sidebar-text); box-shadow: 4px 0 30px rgba(0,0,0,0.15); z-index: 50; }
.sidebar-header { height: 85px; display: flex; flex-direction: column; justify-content: center; align-items: center; padding: 10px 16px; border-bottom: 1px solid var(--sidebar-border); background: rgba(0,0,0,0.2); }
.logo { display: flex; align-items: center; gap: 14px; font-size: 24px; font-weight: 800; color: #ffffff; letter-spacing: -0.5px; }
.logo i { font-size: 30px; color: var(--sidebar-accent); filter: drop-shadow(0 0 10px rgba(14, 165, 233, 0.8)); }
.sidebar-nav { flex: 1; padding: 12px 16px; display: flex; flex-direction: column; gap: 2px; overflow-y: hidden; }
.nav-btn { display: flex; align-items: center; gap: 10px; padding: 8px 16px; background: transparent; border: none; border-radius: var(--radius-sm); color: var(--sidebar-text); font-size: 13px; font-weight: 600; cursor: pointer; transition: all 0.2s ease; text-align: left; }
.nav-btn:hover { background-color: var(--sidebar-active-bg); color: #f8fafc; transform: translateX(4px); }
.nav-btn.active { background: linear-gradient(90deg, rgba(14,165,233,0.15) 0%, rgba(255,255,255,0.05) 100%); color: #ffffff; border-left: 4px solid var(--sidebar-accent); box-shadow: inset 1px 0 10px rgba(14,165,233,0.1); }
.nav-btn.active i { color: var(--sidebar-accent); filter: drop-shadow(0 0 8px rgba(14,165,233,0.6)); }
.nav-divider { height: 1px; background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent); margin: 6px 0; }
.main-content { flex: 1; display: flex; flex-direction: column; overflow: hidden; }
.topbar { height: 80px; background: rgba(255, 255, 255, 0.9); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-bottom: 1px solid rgba(226, 232, 240, 0.6); display: flex; align-items: center; justify-content: space-between; padding: 0 40px; flex-shrink: 0; z-index: 40; box-shadow: 0 4px 20px rgba(15,23,42,0.03); }
.topbar h1 { font-size: 24px; font-weight: 800; color: #0f172a; letter-spacing: -0.5px; }
.status-badge { display: inline-flex; align-items: center; gap: 10px; background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%); color: #065f46; padding: 8px 16px; border-radius: 30px; font-size: 13px; font-weight: 700; box-shadow: 0 2px 5px rgba(0,0,0,0.05); border: 1px solid rgba(16,185,129,0.2); }
.content-area { flex: 1; overflow-y: auto; padding: 40px; }
.seccion { display: none; animation: slideUp 0.5s cubic-bezier(0.2, 0.8, 0.2, 1); max-width: 1100px; margin: 0 auto; }
.seccion.active { display: block; }
@keyframes slideUp { from { opacity: 0; transform: translateY(30px) scale(0.98); } to { opacity: 1; transform: translateY(0) scale(1); } }
.oculto { display: none !important; }
body.viewer-mode .admin-only { pointer-events: none !important; opacity: 0.6 !important; filter: grayscale(20%); }
.section-header { margin-bottom: 32px; position: relative; }
.section-header::after { content: ''; position: absolute; bottom: -12px; left: 0; width: 60px; height: 4px; background: var(--primary-gradient); border-radius: 4px; }
.section-header h2 { font-size: 32px; font-weight: 800; margin-bottom: 8px; color: #0f172a; letter-spacing: -0.5px; }
.section-header p { color: var(--text-muted); font-size: 16px; font-weight: 500; }
.card { background-color: var(--card-bg); border-radius: var(--radius); box-shadow: var(--shadow-md); border: 1px solid rgba(255,255,255,0.8); padding: 32px; margin-bottom: 32px; position: relative; overflow: hidden; }
.card::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 4px; background: var(--primary-gradient); opacity: 0.8; }
.table-card { padding: 0; }
.table-card::before { background: var(--sidebar-accent); }
.modern-form { display: flex; flex-direction: column; gap: 24px; padding: 10px; }
.form-row { display: flex; gap: 24px; flex-wrap: wrap; align-items: flex-end; }
.form-group { display: flex; flex-direction: column; gap: 10px; flex: 1; min-width: 240px; }
.flex-2 { flex: 2; }
.flex-3 { flex: 3; }
.justify-end { justify-content: flex-end; }
.mt-4 { margin-top: 32px; }
.form-group label { font-size: 14px; font-weight: 700; color: #1e293b; text-transform: uppercase; letter-spacing: 0.05em; margin-left: 4px; }
.modern-form input, .modern-form select, .modern-form textarea { width: 100%; padding: 16px 20px; font-size: 16px; font-weight: 500; font-family: inherit; border: 2px solid transparent; border-radius: var(--radius-sm); background-color: #f1f5f9; color: #0f172a; box-shadow: inset 0 2px 4px rgba(15, 23, 42, 0.03); transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); }
.modern-form input:focus, .modern-form select:focus, .modern-form textarea:focus { outline: none; background-color: #ffffff; border-color: var(--primary); box-shadow: 0 4px 15px rgba(79, 70, 229, 0.15), inset 0 2px 4px rgba(15, 23, 42, 0.01); transform: translateY(-2px); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 14px 28px; font-size: 16px; font-weight: 800; border: none; border-radius: var(--radius-sm); cursor: pointer; transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1); font-family: inherit; text-transform: uppercase; letter-spacing: 0.05em; position: relative; top: 0; }
.btn-primary { background: var(--primary-gradient); color: white; box-shadow: 0 6px 0 var(--primary-shadow), 0 10px 20px rgba(79,70,229,0.3); }
.btn-primary:hover { top: 2px; box-shadow: 0 4px 0 var(--primary-shadow), 0 8px 15px rgba(79,70,229,0.4); filter: brightness(1.1); }
.btn-primary:active { top: 6px; box-shadow: 0 0 0 var(--primary-shadow), 0 2px 5px rgba(79,70,229,0.4); }
.btn-secondary { background: var(--secondary-gradient); color: white; box-shadow: 0 6px 0 var(--secondary-shadow), 0 10px 20px rgba(71,85,105,0.3); }
.btn-success { background: var(--success-gradient); color: white; box-shadow: 0 6px 0 var(--success-shadow), 0 10px 20px rgba(16,185,129,0.3); }
.btn-danger { background: var(--danger-gradient); color: white; box-shadow: 0 6px 0 var(--danger-shadow), 0 10px 20px rgba(239,68,68,0.3); }
.table-responsive { width: 100%; overflow-x: auto; }
.modern-table { width: 100%; border-collapse: separate; border-spacing: 0; text-align: left; }
.modern-table th { background-color: #f8fafc; padding: 20px 24px; font-size: 13px; font-weight: 800; color: #475569; text-transform: uppercase; letter-spacing: 0.1em; border-bottom: 2px solid #e2e8f0; }
.modern-table td { padding: 20px 24px; font-size: 15px; border-bottom: 1px solid #f1f5f9; color: var(--text-main); vertical-align: middle; transition: background-color 0.2s; }
.stats-card { display: flex; align-items: center; gap: 24px; }
.stat-icon { width: 80px; height: 80px; border-radius: 24px; background: var(--primary-gradient); color: white; display: flex; align-items: center; justify-content: center; font-size: 40px; box-shadow: 0 10px 20px rgba(0,0,0,0.1); }
.stat-info h3 { font-size: 15px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.1em; font-weight: 800; margin-bottom: 8px; }
.grid-2-col { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.grid-3-col { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 24px; }
.backup-card { display: flex; flex-direction: column; align-items: center; text-align: center; padding: 48px 32px; background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%); }
.backup-icon { width: 100px; height: 100px; border-radius: 30px; display: flex; align-items: center; justify-content: center; font-size: 48px; margin-bottom: 32px; box-shadow: 0 15px 30px rgba(0,0,0,0.1); }
.backup-card.export .backup-icon { background: var(--primary-gradient); color: white; }
.backup-card.import .backup-icon { background: var(--secondary-gradient); color: white; }
.icon-btn { background: #f1f5f9; border: none; font-size: 20px; color: var(--text-muted); cursor: pointer; padding: 8px; border-radius: 8px; transition: all 0.2s; }
.icon-btn:hover { background-color: var(--danger); color: white; }
.icon-btn.btn-edit:hover { background-color: var(--primary); color: white; }
#modalLogin { position: fixed; inset: 0; z-index: 9999; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, #0b1120 0%, #1e1b4b 100%); }
#modalLogin .modal-content { background: rgba(255, 255, 255, 0.98); padding: 40px; border-radius: var(--radius); box-shadow: 0 30px 60px rgba(0,0,0,0.6); max-width: 400px; width: 100%; }

/* Responsive Design */
@media (max-width: 768px) {
  .app-container { flex-direction: column; }
  .sidebar { width: 100%; height: auto; border-right: none; border-bottom: 1px solid var(--sidebar-border); }
  .sidebar-header { height: 60px; padding: 0 15px; }
  .logo { font-size: 20px; }
  .logo i { font-size: 24px; }
  .sidebar-nav { flex-direction: row; overflow-x: auto; padding: 10px; gap: 8px; }
  .sidebar-nav::-webkit-scrollbar { height: 4px; }
  .sidebar-nav::-webkit-scrollbar-thumb { background: var(--sidebar-accent); border-radius: 4px; }
  .nav-btn { white-space: nowrap; padding: 10px 14px; font-size: 14px; }
  .nav-divider { display: none; }
  
  .topbar { height: auto; padding: 15px; flex-direction: column; gap: 10px; text-align: center; }
  .topbar h1 { font-size: 20px; }
  .content-area { padding: 15px; }
  .section-header h2 { font-size: 24px; }
  .section-header p { font-size: 14px; }
  
  .card { padding: 20px; margin-bottom: 20px; }
  .grid-2-col, .grid-3-col { grid-template-columns: 1fr; gap: 15px; }
  
  .form-row { flex-direction: column; gap: 15px; align-items: stretch; }
  .form-group { min-width: 100%; }
  .form-actions { display: flex; flex-direction: column; margin-top: 10px; }
  .btn { width: 100%; padding: 14px; }
  
  .stats-card { flex-direction: column; text-align: center; gap: 15px; }
  .stat-icon { width: 60px; height: 60px; font-size: 30px; margin: 0 auto; }
  .stat-info h3 { font-size: 13px; }
  .stat-info p { font-size: 22px !important; }
}

/* Estilos del Dashboard */
.dashboard-container {
    padding: 20px;
    font-family: Arial, sans-serif;
    color: #333;
}
.kpi-header {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 30px;
}
.kpi-card {
    flex: 1;
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    text-align: center;
    border-top: 4px solid #007bff;
}
.kpi-card.ganancia { border-top-color: #28a745; }
.kpi-card.gasto { border-top-color: #dc3545; }
.kpi-card.neto { border-top-color: #17a2b8; }
.kpi-card h3 { margin: 0; font-size: 14px; color: #6c757d; }
.kpi-card p { margin: 10px 0 0; font-size: 24px; font-weight: bold; }
.charts-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}
.inventarios-row {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 30px;
}
.chart-container, .table-container {
    flex: 1;
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}
table { width: 100%; border-collapse: collapse; margin-top: 15px; }
table th, table td { padding: 12px; text-align: left; border-bottom: 1px solid #ddd; }
table th { background-color: #f8f9fa; }
.btn-primary, .btn-secondary {
    padding: 10px 20px; border: none; border-radius: 5px; cursor: pointer; color: white;
}
.btn-primary { background-color: #007bff; }
.btn-secondary { background-color: #28a745; margin-left: 10px; }