:root {
    --primary: #2563eb;
    --success: #22c55e;
    --danger: #ef4444;
    --dark: #1e293b;
    --light: #f1f5f9;
    --white: #ffffff;
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Segoe UI', sans-serif; }

body { background-color: var(--light); color: var(--dark); }

/* Navigation */
.navbar {
    /* কাজ করছে না
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
    */
    background: var(--white);
    padding: 1rem 2rem;
    display: flex;
    justify_content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}
.brand { font-size: 1.5rem; font-weight: bold; color: var(--primary); text-decoration: none;}
.user-profile { display: flex; align-items: center; gap: 10px; }
.user-photo { width: 40px; height: 40px; border-radius: 50%; object-fit: cover; border: 2px solid var(--primary); }
.nav-links a { text-decoration: none; color: var(--dark); margin-left: 20px; font-weight: 500; transition: 0.3s; }
.nav-links a:hover { color: var(--primary); }
.btn-logout { color: var(--danger) !important; }

/* Container */
.container { max-width: 1200px; margin: 2rem auto; padding: 0 1rem; }

/* Dashboard Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}
.card {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    text-align: center;
}
.card h3 { font-size: 0.9rem; color: #64748b; margin-bottom: 0.5rem; }
.card .amount { font-size: 1.8rem; font-weight: bold; }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-primary { color: var(--primary); }

/* Form & Table */
.form-box { background: var(--white); padding: 2rem; border-radius: 10px; max-width: 600px; margin: 0 auto; }
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; margin-bottom: 0.5rem; font-weight: 500; }
.form-control { width: 100%; padding: 0.8rem; border: 1px solid #cbd5e1; border-radius: 6px; font-size: 1rem; }
.btn { display: inline-block; padding: 0.8rem 1.5rem; background: var(--primary); color: white; border: none; border-radius: 6px; cursor: pointer; width: 100%; font-size: 1rem; transition: 0.3s; }
.btn:hover { background: #1d4ed8; }

.table-container { overflow-x: auto; background: var(--white); border-radius: 10px; padding: 1rem; }
table { width: 100%; border-collapse: collapse; min-width: 600px; }
th, td { padding: 1rem; text-align: left; border-bottom: 1px solid #e2e8f0; }
th { background: #f8fafc; color: #64748b; }
.badge { padding: 4px 8px; border-radius: 4px; font-size: 0.8rem; color: white; }
.badge-income { background: var(--success); }
.badge-expense { background: var(--danger); }

/* Login Page Specific */
.login-body { display: flex; justify-content: center; align-items: center; height: 100vh; background: #e2e8f0; }

/* Mobile Menu */
@media (max-width: 768px) {
    .navbar { flex-direction: column; gap: 1rem; }
    .nav-links { display: flex; gap: 1rem; flex-wrap: wrap; justify-content: center; }
    .nav-links a { margin: 0; }
}

/* Filter Form Styles */
.filter-box {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 10px;
    margin-bottom: 2rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}
.filter-form {
    display: flex;
    gap: 1rem;
    align-items: flex-end; /* Align inputs and button at bottom */
    flex-wrap: wrap;
}
.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.filter-group label { font-size: 0.9rem; color: #64748b; font-weight: 500; }
.btn-filter { background: var(--dark); color: white; padding: 0.8rem 1.5rem; border: none; border-radius: 6px; cursor: pointer; transition: 0.3s; }
.btn-filter:hover { background: #334155; }
.btn-reset { background: #e2e8f0; color: var(--dark); text-decoration: none; padding: 0.8rem 1.5rem; border-radius: 6px; display: inline-block; font-weight: 500; }
.btn-reset:hover { background: #cbd5e1; }